Home / 1,521.32-2,281.26-790.16

Finding the Fourth Proportional to 1,521.32, 2,281.26 and 790.16

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Solution

The fourth proportional to 1,521.32, 2,281.26 and 790.16 is: 1,184.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.32 : 2,281.26 = 790.16 : x
  2. Step 2: Convert to fraction form
    1,521.32/2,281.26 = 790.16/x
  3. Step 3: Cross multiply
    1,521.32x = 2,281.26 × 790.16
  4. Step 4: Simplify right side
    1,521.32x = 1,802,560.40
  5. Step 5: Solve for x
    x = 1,802,560.40/1,521.32
  6. Step 6: Final answer
    x = 1,184.87

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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.