Home / 2,990.16-4,126.56-1,663.92

Finding the Fourth Proportional to 2,990.16, 4,126.56 and 1,663.92

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Solution

The fourth proportional to 2,990.16, 4,126.56 and 1,663.92 is: 2,296.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.16 : 4,126.56 = 1,663.92 : x
  2. Step 2: Convert to fraction form
    2,990.16/4,126.56 = 1,663.92/x
  3. Step 3: Cross multiply
    2,990.16x = 4,126.56 × 1,663.92
  4. Step 4: Simplify right side
    2,990.16x = 6,866,265.72
  5. Step 5: Solve for x
    x = 6,866,265.72/2,990.16
  6. Step 6: Final answer
    x = 2,296.29

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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.