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Finding the Fourth Proportional to 8,570.88, 11,888.40 and 8,343.41

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Solution

The fourth proportional to 8,570.88, 11,888.40 and 8,343.41 is: 11,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.88 : 11,888.40 = 8,343.41 : x
  2. Step 2: Convert to fraction form
    8,570.88/11,888.40 = 8,343.41/x
  3. Step 3: Cross multiply
    8,570.88x = 11,888.40 × 8,343.41
  4. Step 4: Simplify right side
    8,570.88x = 99,189,767.29
  5. Step 5: Solve for x
    x = 99,189,767.29/8,570.88
  6. Step 6: Final answer
    x = 11,572.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.