Home / 9,412.10-12,990.40-5,432.66

Finding the Fourth Proportional to 9,412.10, 12,990.40 and 5,432.66

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Solution

The fourth proportional to 9,412.10, 12,990.40 and 5,432.66 is: 7,498.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.10 : 12,990.40 = 5,432.66 : x
  2. Step 2: Convert to fraction form
    9,412.10/12,990.40 = 5,432.66/x
  3. Step 3: Cross multiply
    9,412.10x = 12,990.40 × 5,432.66
  4. Step 4: Simplify right side
    9,412.10x = 70,572,426.46
  5. Step 5: Solve for x
    x = 70,572,426.46/9,412.10
  6. Step 6: Final answer
    x = 7,498.05

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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.