Home / 1,415.53-2,124.68-928.92

Finding the Fourth Proportional to 1,415.53, 2,124.68 and 928.92

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Solution

The fourth proportional to 1,415.53, 2,124.68 and 928.92 is: 1,394.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.53 : 2,124.68 = 928.92 : x
  2. Step 2: Convert to fraction form
    1,415.53/2,124.68 = 928.92/x
  3. Step 3: Cross multiply
    1,415.53x = 2,124.68 × 928.92
  4. Step 4: Simplify right side
    1,415.53x = 1,973,654.34
  5. Step 5: Solve for x
    x = 1,973,654.34/1,415.53
  6. Step 6: Final answer
    x = 1,394.29

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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.