Home / 8,990.06-12,406.15-5,011.16

Finding the Fourth Proportional to 8,990.06, 12,406.15 and 5,011.16

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Solution

The fourth proportional to 8,990.06, 12,406.15 and 5,011.16 is: 6,915.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.06 : 12,406.15 = 5,011.16 : x
  2. Step 2: Convert to fraction form
    8,990.06/12,406.15 = 5,011.16/x
  3. Step 3: Cross multiply
    8,990.06x = 12,406.15 × 5,011.16
  4. Step 4: Simplify right side
    8,990.06x = 62,169,202.63
  5. Step 5: Solve for x
    x = 62,169,202.63/8,990.06
  6. Step 6: Final answer
    x = 6,915.33

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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.