Home / 1,861.43-2,575.13-1,529.19

Finding the Fourth Proportional to 1,861.43, 2,575.13 and 1,529.19

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Solution

The fourth proportional to 1,861.43, 2,575.13 and 1,529.19 is: 2,115.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.43 : 2,575.13 = 1,529.19 : x
  2. Step 2: Convert to fraction form
    1,861.43/2,575.13 = 1,529.19/x
  3. Step 3: Cross multiply
    1,861.43x = 2,575.13 × 1,529.19
  4. Step 4: Simplify right side
    1,861.43x = 3,937,855.40
  5. Step 5: Solve for x
    x = 3,937,855.40/1,861.43
  6. Step 6: Final answer
    x = 2,115.51

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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.