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Finding the Fourth Proportional to 9,878.78, 14,818.56 and 4,329.38

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Solution

The fourth proportional to 9,878.78, 14,818.56 and 4,329.38 is: 6,494.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.78 : 14,818.56 = 4,329.38 : x
  2. Step 2: Convert to fraction form
    9,878.78/14,818.56 = 4,329.38/x
  3. Step 3: Cross multiply
    9,878.78x = 14,818.56 × 4,329.38
  4. Step 4: Simplify right side
    9,878.78x = 64,155,177.29
  5. Step 5: Solve for x
    x = 64,155,177.29/9,878.78
  6. Step 6: Final answer
    x = 6,494.24

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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.