Home / 7,617.31-11,429.95-3,117.71

Finding the Fourth Proportional to 7,617.31, 11,429.95 and 3,117.71

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Solution

The fourth proportional to 7,617.31, 11,429.95 and 3,117.71 is: 4,678.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,617.31 : 11,429.95 = 3,117.71 : x
  2. Step 2: Convert to fraction form
    7,617.31/11,429.95 = 3,117.71/x
  3. Step 3: Cross multiply
    7,617.31x = 11,429.95 × 3,117.71
  4. Step 4: Simplify right side
    7,617.31x = 35,635,231.75
  5. Step 5: Solve for x
    x = 35,635,231.75/7,617.31
  6. Step 6: Final answer
    x = 4,678.19

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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.