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Finding the Fourth Proportional to 6,878.40, 9,490.02 and 4,044.87

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Solution

The fourth proportional to 6,878.40, 9,490.02 and 4,044.87 is: 5,580.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.40 : 9,490.02 = 4,044.87 : x
  2. Step 2: Convert to fraction form
    6,878.40/9,490.02 = 4,044.87/x
  3. Step 3: Cross multiply
    6,878.40x = 9,490.02 × 4,044.87
  4. Step 4: Simplify right side
    6,878.40x = 38,385,897.20
  5. Step 5: Solve for x
    x = 38,385,897.20/6,878.40
  6. Step 6: Final answer
    x = 5,580.64

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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.