Home / 1,642.29-2,264.79-1,248.63

Finding the Fourth Proportional to 1,642.29, 2,264.79 and 1,248.63

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Solution

The fourth proportional to 1,642.29, 2,264.79 and 1,248.63 is: 1,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.29 : 2,264.79 = 1,248.63 : x
  2. Step 2: Convert to fraction form
    1,642.29/2,264.79 = 1,248.63/x
  3. Step 3: Cross multiply
    1,642.29x = 2,264.79 × 1,248.63
  4. Step 4: Simplify right side
    1,642.29x = 2,827,884.74
  5. Step 5: Solve for x
    x = 2,827,884.74/1,642.29
  6. Step 6: Final answer
    x = 1,721.92

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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.