Home / 1,990.38-2,746.80-1,492.14

Finding the Fourth Proportional to 1,990.38, 2,746.80 and 1,492.14

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Solution

The fourth proportional to 1,990.38, 2,746.80 and 1,492.14 is: 2,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.38 : 2,746.80 = 1,492.14 : x
  2. Step 2: Convert to fraction form
    1,990.38/2,746.80 = 1,492.14/x
  3. Step 3: Cross multiply
    1,990.38x = 2,746.80 × 1,492.14
  4. Step 4: Simplify right side
    1,990.38x = 4,098,610.15
  5. Step 5: Solve for x
    x = 4,098,610.15/1,990.38
  6. Step 6: Final answer
    x = 2,059.21

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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.