Home / 2,990.16-4,126.36-1,663.85

Finding the Fourth Proportional to 2,990.16, 4,126.36 and 1,663.85

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Solution

The fourth proportional to 2,990.16, 4,126.36 and 1,663.85 is: 2,296.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.16 : 4,126.36 = 1,663.85 : x
  2. Step 2: Convert to fraction form
    2,990.16/4,126.36 = 1,663.85/x
  3. Step 3: Cross multiply
    2,990.16x = 4,126.36 × 1,663.85
  4. Step 4: Simplify right side
    2,990.16x = 6,865,644.09
  5. Step 5: Solve for x
    x = 6,865,644.09/2,990.16
  6. Step 6: Final answer
    x = 2,296.08

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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.