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Finding the Fourth Proportional to 4,290.71, 6,439.71 and 1,695.47

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Solution

The fourth proportional to 4,290.71, 6,439.71 and 1,695.47 is: 2,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.71 : 6,439.71 = 1,695.47 : x
  2. Step 2: Convert to fraction form
    4,290.71/6,439.71 = 1,695.47/x
  3. Step 3: Cross multiply
    4,290.71x = 6,439.71 × 1,695.47
  4. Step 4: Simplify right side
    4,290.71x = 10,918,335.11
  5. Step 5: Solve for x
    x = 10,918,335.11/4,290.71
  6. Step 6: Final answer
    x = 2,544.65

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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.