Home / 2,925.60-4,387.05-1,281.30

Finding the Fourth Proportional to 2,925.60, 4,387.05 and 1,281.30

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Solution

The fourth proportional to 2,925.60, 4,387.05 and 1,281.30 is: 1,921.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.60 : 4,387.05 = 1,281.30 : x
  2. Step 2: Convert to fraction form
    2,925.60/4,387.05 = 1,281.30/x
  3. Step 3: Cross multiply
    2,925.60x = 4,387.05 × 1,281.30
  4. Step 4: Simplify right side
    2,925.60x = 5,621,127.17
  5. Step 5: Solve for x
    x = 5,621,127.17/2,925.60
  6. Step 6: Final answer
    x = 1,921.36

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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.