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Finding the Fourth Proportional to 8,714.56, 13,070.40 and 2,870.56

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Solution

The fourth proportional to 8,714.56, 13,070.40 and 2,870.56 is: 4,305.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,714.56 : 13,070.40 = 2,870.56 : x
  2. Step 2: Convert to fraction form
    8,714.56/13,070.40 = 2,870.56/x
  3. Step 3: Cross multiply
    8,714.56x = 13,070.40 × 2,870.56
  4. Step 4: Simplify right side
    8,714.56x = 37,519,367.42
  5. Step 5: Solve for x
    x = 37,519,367.42/8,714.56
  6. Step 6: Final answer
    x = 4,305.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.