Home / 1,972.60-2,721.98-1,088.38

Finding the Fourth Proportional to 1,972.60, 2,721.98 and 1,088.38

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Solution

The fourth proportional to 1,972.60, 2,721.98 and 1,088.38 is: 1,501.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.60 : 2,721.98 = 1,088.38 : x
  2. Step 2: Convert to fraction form
    1,972.60/2,721.98 = 1,088.38/x
  3. Step 3: Cross multiply
    1,972.60x = 2,721.98 × 1,088.38
  4. Step 4: Simplify right side
    1,972.60x = 2,962,548.59
  5. Step 5: Solve for x
    x = 2,962,548.59/1,972.60
  6. Step 6: Final answer
    x = 1,501.85

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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.