Home / 1,861.87-2,788.55-888.66

Finding the Fourth Proportional to 1,861.87, 2,788.55 and 888.66

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Solution

The fourth proportional to 1,861.87, 2,788.55 and 888.66 is: 1,330.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.87 : 2,788.55 = 888.66 : x
  2. Step 2: Convert to fraction form
    1,861.87/2,788.55 = 888.66/x
  3. Step 3: Cross multiply
    1,861.87x = 2,788.55 × 888.66
  4. Step 4: Simplify right side
    1,861.87x = 2,478,061.99
  5. Step 5: Solve for x
    x = 2,478,061.99/1,861.87
  6. Step 6: Final answer
    x = 1,330.95

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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.