Home / 1,539.24-2,311.10-891.24

Finding the Fourth Proportional to 1,539.24, 2,311.10 and 891.24

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Solution

The fourth proportional to 1,539.24, 2,311.10 and 891.24 is: 1,338.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.24 : 2,311.10 = 891.24 : x
  2. Step 2: Convert to fraction form
    1,539.24/2,311.10 = 891.24/x
  3. Step 3: Cross multiply
    1,539.24x = 2,311.10 × 891.24
  4. Step 4: Simplify right side
    1,539.24x = 2,059,744.76
  5. Step 5: Solve for x
    x = 2,059,744.76/1,539.24
  6. Step 6: Final answer
    x = 1,338.16

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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.