Home / 8,158.40-11,241.12-7,487.36

Finding the Fourth Proportional to 8,158.40, 11,241.12 and 7,487.36

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Solution

The fourth proportional to 8,158.40, 11,241.12 and 7,487.36 is: 10,316.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.40 : 11,241.12 = 7,487.36 : x
  2. Step 2: Convert to fraction form
    8,158.40/11,241.12 = 7,487.36/x
  3. Step 3: Cross multiply
    8,158.40x = 11,241.12 × 7,487.36
  4. Step 4: Simplify right side
    8,158.40x = 84,166,312.24
  5. Step 5: Solve for x
    x = 84,166,312.24/8,158.40
  6. Step 6: Final answer
    x = 10,316.52

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Half scale
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Double scale
Find fourth proportional to 8,159.40, 11,242.50 and 7,488.36
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.