Home / 1,586.32-2,188.74-1,089.88

Finding the Fourth Proportional to 1,586.32, 2,188.74 and 1,089.88

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Solution

The fourth proportional to 1,586.32, 2,188.74 and 1,089.88 is: 1,503.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.32 : 2,188.74 = 1,089.88 : x
  2. Step 2: Convert to fraction form
    1,586.32/2,188.74 = 1,089.88/x
  3. Step 3: Cross multiply
    1,586.32x = 2,188.74 × 1,089.88
  4. Step 4: Simplify right side
    1,586.32x = 2,385,463.95
  5. Step 5: Solve for x
    x = 2,385,463.95/1,586.32
  6. Step 6: Final answer
    x = 1,503.77

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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.