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Finding the Fourth Proportional to 7,714.64, 10,645.07 and 4,357.40

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Solution

The fourth proportional to 7,714.64, 10,645.07 and 4,357.40 is: 6,012.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,714.64 : 10,645.07 = 4,357.40 : x
  2. Step 2: Convert to fraction form
    7,714.64/10,645.07 = 4,357.40/x
  3. Step 3: Cross multiply
    7,714.64x = 10,645.07 × 4,357.40
  4. Step 4: Simplify right side
    7,714.64x = 46,384,753.01
  5. Step 5: Solve for x
    x = 46,384,753.01/7,714.64
  6. Step 6: Final answer
    x = 6,012.56

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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.