Home / 1,624.14-2,240.77-915.90

Finding the Fourth Proportional to 1,624.14, 2,240.77 and 915.90

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Solution

The fourth proportional to 1,624.14, 2,240.77 and 915.90 is: 1,263.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.14 : 2,240.77 = 915.90 : x
  2. Step 2: Convert to fraction form
    1,624.14/2,240.77 = 915.90/x
  3. Step 3: Cross multiply
    1,624.14x = 2,240.77 × 915.90
  4. Step 4: Simplify right side
    1,624.14x = 2,052,310.04
  5. Step 5: Solve for x
    x = 2,052,310.04/1,624.14
  6. Step 6: Final answer
    x = 1,263.63

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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.