Home / 1,520.12-2,098.76-1,362.47

Finding the Fourth Proportional to 1,520.12, 2,098.76 and 1,362.47

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Solution

The fourth proportional to 1,520.12, 2,098.76 and 1,362.47 is: 1,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.12 : 2,098.76 = 1,362.47 : x
  2. Step 2: Convert to fraction form
    1,520.12/2,098.76 = 1,362.47/x
  3. Step 3: Cross multiply
    1,520.12x = 2,098.76 × 1,362.47
  4. Step 4: Simplify right side
    1,520.12x = 2,859,480.23
  5. Step 5: Solve for x
    x = 2,859,480.23/1,520.12
  6. Step 6: Final answer
    x = 1,881.09

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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.