Home / 7,981.29-11,010.90-5,148.06

Finding the Fourth Proportional to 7,981.29, 11,010.90 and 5,148.06

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Solution

The fourth proportional to 7,981.29, 11,010.90 and 5,148.06 is: 7,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.29 : 11,010.90 = 5,148.06 : x
  2. Step 2: Convert to fraction form
    7,981.29/11,010.90 = 5,148.06/x
  3. Step 3: Cross multiply
    7,981.29x = 11,010.90 × 5,148.06
  4. Step 4: Simplify right side
    7,981.29x = 56,684,773.85
  5. Step 5: Solve for x
    x = 56,684,773.85/7,981.29
  6. Step 6: Final answer
    x = 7,102.21

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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.