Home / 8,159.40-11,242.50-7,488.36

Finding the Fourth Proportional to 8,159.40, 11,242.50 and 7,488.36

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Solution

The fourth proportional to 8,159.40, 11,242.50 and 7,488.36 is: 10,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.40 : 11,242.50 = 7,488.36 : x
  2. Step 2: Convert to fraction form
    8,159.40/11,242.50 = 7,488.36/x
  3. Step 3: Cross multiply
    8,159.40x = 11,242.50 × 7,488.36
  4. Step 4: Simplify right side
    8,159.40x = 84,187,887.30
  5. Step 5: Solve for x
    x = 84,187,887.30/8,159.40
  6. Step 6: Final answer
    x = 10,317.90

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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.