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Finding the Fourth Proportional to 9,818.59, 14,720.59 and 3,151.21

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Solution

The fourth proportional to 9,818.59, 14,720.59 and 3,151.21 is: 4,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,818.59 : 14,720.59 = 3,151.21 : x
  2. Step 2: Convert to fraction form
    9,818.59/14,720.59 = 3,151.21/x
  3. Step 3: Cross multiply
    9,818.59x = 14,720.59 × 3,151.21
  4. Step 4: Simplify right side
    9,818.59x = 46,387,670.41
  5. Step 5: Solve for x
    x = 46,387,670.41/9,818.59
  6. Step 6: Final answer
    x = 4,724.47

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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.