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Finding the Fourth Proportional to 8,988.58, 12,415.92 and 6,851.08

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Solution

The fourth proportional to 8,988.58, 12,415.92 and 6,851.08 is: 9,463.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.58 : 12,415.92 = 6,851.08 : x
  2. Step 2: Convert to fraction form
    8,988.58/12,415.92 = 6,851.08/x
  3. Step 3: Cross multiply
    8,988.58x = 12,415.92 × 6,851.08
  4. Step 4: Simplify right side
    8,988.58x = 85,062,461.19
  5. Step 5: Solve for x
    x = 85,062,461.19/8,988.58
  6. Step 6: Final answer
    x = 9,463.39

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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.