Home / 2,868.46-3,957.99-1,689.76

Finding the Fourth Proportional to 2,868.46, 3,957.99 and 1,689.76

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Solution

The fourth proportional to 2,868.46, 3,957.99 and 1,689.76 is: 2,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.46 : 3,957.99 = 1,689.76 : x
  2. Step 2: Convert to fraction form
    2,868.46/3,957.99 = 1,689.76/x
  3. Step 3: Cross multiply
    2,868.46x = 3,957.99 × 1,689.76
  4. Step 4: Simplify right side
    2,868.46x = 6,688,058.13
  5. Step 5: Solve for x
    x = 6,688,058.13/2,868.46
  6. Step 6: Final answer
    x = 2,331.59

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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.