Home / 7,972.91-11,005.07-5,140.29

Finding the Fourth Proportional to 7,972.91, 11,005.07 and 5,140.29

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Solution

The fourth proportional to 7,972.91, 11,005.07 and 5,140.29 is: 7,095.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.91 : 11,005.07 = 5,140.29 : x
  2. Step 2: Convert to fraction form
    7,972.91/11,005.07 = 5,140.29/x
  3. Step 3: Cross multiply
    7,972.91x = 11,005.07 × 5,140.29
  4. Step 4: Simplify right side
    7,972.91x = 56,569,225.57
  5. Step 5: Solve for x
    x = 56,569,225.57/7,972.91
  6. Step 6: Final answer
    x = 7,095.18

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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.