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Finding the Fourth Proportional to 3,115.83, 4,673.76 and 924.57

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Solution

The fourth proportional to 3,115.83, 4,673.76 and 924.57 is: 1,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.83 : 4,673.76 = 924.57 : x
  2. Step 2: Convert to fraction form
    3,115.83/4,673.76 = 924.57/x
  3. Step 3: Cross multiply
    3,115.83x = 4,673.76 × 924.57
  4. Step 4: Simplify right side
    3,115.83x = 4,321,218.28
  5. Step 5: Solve for x
    x = 4,321,218.28/3,115.83
  6. Step 6: Final answer
    x = 1,386.86

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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.