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Finding the Fourth Proportional to 2,917.71, 4,377.86 and 1,530.72

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Solution

The fourth proportional to 2,917.71, 4,377.86 and 1,530.72 is: 2,296.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.71 : 4,377.86 = 1,530.72 : x
  2. Step 2: Convert to fraction form
    2,917.71/4,377.86 = 1,530.72/x
  3. Step 3: Cross multiply
    2,917.71x = 4,377.86 × 1,530.72
  4. Step 4: Simplify right side
    2,917.71x = 6,701,277.86
  5. Step 5: Solve for x
    x = 6,701,277.86/2,917.71
  6. Step 6: Final answer
    x = 2,296.76

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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.