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Finding the Fourth Proportional to 1,987.87, 2,980.84 and 600.95

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Solution

The fourth proportional to 1,987.87, 2,980.84 and 600.95 is: 901.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.87 : 2,980.84 = 600.95 : x
  2. Step 2: Convert to fraction form
    1,987.87/2,980.84 = 600.95/x
  3. Step 3: Cross multiply
    1,987.87x = 2,980.84 × 600.95
  4. Step 4: Simplify right side
    1,987.87x = 1,791,335.80
  5. Step 5: Solve for x
    x = 1,791,335.80/1,987.87
  6. Step 6: Final answer
    x = 901.13

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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.