Home / 1,587.52-2,190.24-966.40

Finding the Fourth Proportional to 1,587.52, 2,190.24 and 966.40

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Solution

The fourth proportional to 1,587.52, 2,190.24 and 966.40 is: 1,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.52 : 2,190.24 = 966.40 : x
  2. Step 2: Convert to fraction form
    1,587.52/2,190.24 = 966.40/x
  3. Step 3: Cross multiply
    1,587.52x = 2,190.24 × 966.40
  4. Step 4: Simplify right side
    1,587.52x = 2,116,647.94
  5. Step 5: Solve for x
    x = 2,116,647.94/1,587.52
  6. Step 6: Final answer
    x = 1,333.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.