Home / 5,581.40-8,372.90-1,686.11

Finding the Fourth Proportional to 5,581.40, 8,372.90 and 1,686.11

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Solution

The fourth proportional to 5,581.40, 8,372.90 and 1,686.11 is: 2,529.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.40 : 8,372.90 = 1,686.11 : x
  2. Step 2: Convert to fraction form
    5,581.40/8,372.90 = 1,686.11/x
  3. Step 3: Cross multiply
    5,581.40x = 8,372.90 × 1,686.11
  4. Step 4: Simplify right side
    5,581.40x = 14,117,592.77
  5. Step 5: Solve for x
    x = 14,117,592.77/5,581.40
  6. Step 6: Final answer
    x = 2,529.40

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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.