Home / 1,959.29-2,938.95-660.77

Finding the Fourth Proportional to 1,959.29, 2,938.95 and 660.77

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Solution

The fourth proportional to 1,959.29, 2,938.95 and 660.77 is: 991.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.29 : 2,938.95 = 660.77 : x
  2. Step 2: Convert to fraction form
    1,959.29/2,938.95 = 660.77/x
  3. Step 3: Cross multiply
    1,959.29x = 2,938.95 × 660.77
  4. Step 4: Simplify right side
    1,959.29x = 1,941,966.69
  5. Step 5: Solve for x
    x = 1,941,966.69/1,959.29
  6. Step 6: Final answer
    x = 991.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.