Home / 1,522.20-2,281.21-740.65

Finding the Fourth Proportional to 1,522.20, 2,281.21 and 740.65

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Solution

The fourth proportional to 1,522.20, 2,281.21 and 740.65 is: 1,109.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.20 : 2,281.21 = 740.65 : x
  2. Step 2: Convert to fraction form
    1,522.20/2,281.21 = 740.65/x
  3. Step 3: Cross multiply
    1,522.20x = 2,281.21 × 740.65
  4. Step 4: Simplify right side
    1,522.20x = 1,689,578.19
  5. Step 5: Solve for x
    x = 1,689,578.19/1,522.20
  6. Step 6: Final answer
    x = 1,109.96

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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.