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Finding the Fourth Proportional to 8,990.52, 12,407.67 and 5,011.10

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Solution

The fourth proportional to 8,990.52, 12,407.67 and 5,011.10 is: 6,915.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.52 : 12,407.67 = 5,011.10 : x
  2. Step 2: Convert to fraction form
    8,990.52/12,407.67 = 5,011.10/x
  3. Step 3: Cross multiply
    8,990.52x = 12,407.67 × 5,011.10
  4. Step 4: Simplify right side
    8,990.52x = 62,176,075.14
  5. Step 5: Solve for x
    x = 62,176,075.14/8,990.52
  6. Step 6: Final answer
    x = 6,915.74

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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.