Home / 8,490.13-11,716.45-5,135.18

Finding the Fourth Proportional to 8,490.13, 11,716.45 and 5,135.18

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Solution

The fourth proportional to 8,490.13, 11,716.45 and 5,135.18 is: 7,086.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.13 : 11,716.45 = 5,135.18 : x
  2. Step 2: Convert to fraction form
    8,490.13/11,716.45 = 5,135.18/x
  3. Step 3: Cross multiply
    8,490.13x = 11,716.45 × 5,135.18
  4. Step 4: Simplify right side
    8,490.13x = 60,166,008.29
  5. Step 5: Solve for x
    x = 60,166,008.29/8,490.13
  6. Step 6: Final answer
    x = 7,086.58

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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.