Home / 1,587.70-2,378.35-1,008.50

Finding the Fourth Proportional to 1,587.70, 2,378.35 and 1,008.50

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Solution

The fourth proportional to 1,587.70, 2,378.35 and 1,008.50 is: 1,510.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.70 : 2,378.35 = 1,008.50 : x
  2. Step 2: Convert to fraction form
    1,587.70/2,378.35 = 1,008.50/x
  3. Step 3: Cross multiply
    1,587.70x = 2,378.35 × 1,008.50
  4. Step 4: Simplify right side
    1,587.70x = 2,398,565.98
  5. Step 5: Solve for x
    x = 2,398,565.98/1,587.70
  6. Step 6: Final answer
    x = 1,510.72

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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.