Home / 7,428.32-11,142.48-3,045

Finding the Fourth Proportional to 7,428.32, 11,142.48 and 3,045

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Solution

The fourth proportional to 7,428.32, 11,142.48 and 3,045 is: 4,567.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.32 : 11,142.48 = 3,045 : x
  2. Step 2: Convert to fraction form
    7,428.32/11,142.48 = 3,045/x
  3. Step 3: Cross multiply
    7,428.32x = 11,142.48 × 3,045
  4. Step 4: Simplify right side
    7,428.32x = 33,928,851.60
  5. Step 5: Solve for x
    x = 33,928,851.60/7,428.32
  6. Step 6: Final answer
    x = 4,567.50

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Half scale
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Double scale
Find fourth proportional to 7,429.32, 11,143.98 and 3,046
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.