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Finding the Fourth Proportional to 6,287.70, 9,431.55 and 1,607.72

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Solution

The fourth proportional to 6,287.70, 9,431.55 and 1,607.72 is: 2,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.70 : 9,431.55 = 1,607.72 : x
  2. Step 2: Convert to fraction form
    6,287.70/9,431.55 = 1,607.72/x
  3. Step 3: Cross multiply
    6,287.70x = 9,431.55 × 1,607.72
  4. Step 4: Simplify right side
    6,287.70x = 15,163,291.57
  5. Step 5: Solve for x
    x = 15,163,291.57/6,287.70
  6. Step 6: Final answer
    x = 2,411.58

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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.