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Finding the Fourth Proportional to 8,993.12, 12,407.58 and 5,013.47

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Solution

The fourth proportional to 8,993.12, 12,407.58 and 5,013.47 is: 6,916.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.12 : 12,407.58 = 5,013.47 : x
  2. Step 2: Convert to fraction form
    8,993.12/12,407.58 = 5,013.47/x
  3. Step 3: Cross multiply
    8,993.12x = 12,407.58 × 5,013.47
  4. Step 4: Simplify right side
    8,993.12x = 62,205,030.10
  5. Step 5: Solve for x
    x = 62,205,030.10/8,993.12
  6. Step 6: Final answer
    x = 6,916.96

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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.