Home / 2,098.13-3,128.65-1,947.47

Finding the Fourth Proportional to 2,098.13, 3,128.65 and 1,947.47

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Solution

The fourth proportional to 2,098.13, 3,128.65 and 1,947.47 is: 2,903.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.13 : 3,128.65 = 1,947.47 : x
  2. Step 2: Convert to fraction form
    2,098.13/3,128.65 = 1,947.47/x
  3. Step 3: Cross multiply
    2,098.13x = 3,128.65 × 1,947.47
  4. Step 4: Simplify right side
    2,098.13x = 6,092,931.50
  5. Step 5: Solve for x
    x = 6,092,931.50/2,098.13
  6. Step 6: Final answer
    x = 2,903.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.