Home / 5,276.22-7,916.45-1,990.24

Finding the Fourth Proportional to 5,276.22, 7,916.45 and 1,990.24

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Solution

The fourth proportional to 5,276.22, 7,916.45 and 1,990.24 is: 2,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.22 : 7,916.45 = 1,990.24 : x
  2. Step 2: Convert to fraction form
    5,276.22/7,916.45 = 1,990.24/x
  3. Step 3: Cross multiply
    5,276.22x = 7,916.45 × 1,990.24
  4. Step 4: Simplify right side
    5,276.22x = 15,755,635.45
  5. Step 5: Solve for x
    x = 15,755,635.45/5,276.22
  6. Step 6: Final answer
    x = 2,986.16

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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.