Home / 1,929.28-2,889.60-1,654.72

Finding the Fourth Proportional to 1,929.28, 2,889.60 and 1,654.72

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Solution

The fourth proportional to 1,929.28, 2,889.60 and 1,654.72 is: 2,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.28 : 2,889.60 = 1,654.72 : x
  2. Step 2: Convert to fraction form
    1,929.28/2,889.60 = 1,654.72/x
  3. Step 3: Cross multiply
    1,929.28x = 2,889.60 × 1,654.72
  4. Step 4: Simplify right side
    1,929.28x = 4,781,478.91
  5. Step 5: Solve for x
    x = 4,781,478.91/1,929.28
  6. Step 6: Final answer
    x = 2,478.37

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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.