Home / 1,888.80-2,602.33-1,439.85

Finding the Fourth Proportional to 1,888.80, 2,602.33 and 1,439.85

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Solution

The fourth proportional to 1,888.80, 2,602.33 and 1,439.85 is: 1,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.80 : 2,602.33 = 1,439.85 : x
  2. Step 2: Convert to fraction form
    1,888.80/2,602.33 = 1,439.85/x
  3. Step 3: Cross multiply
    1,888.80x = 2,602.33 × 1,439.85
  4. Step 4: Simplify right side
    1,888.80x = 3,746,964.85
  5. Step 5: Solve for x
    x = 3,746,964.85/1,888.80
  6. Step 6: Final answer
    x = 1,983.78

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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.