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Finding the Fourth Proportional to 1,987.82, 2,980.75 and 600.89

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Solution

The fourth proportional to 1,987.82, 2,980.75 and 600.89 is: 901.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.82 : 2,980.75 = 600.89 : x
  2. Step 2: Convert to fraction form
    1,987.82/2,980.75 = 600.89/x
  3. Step 3: Cross multiply
    1,987.82x = 2,980.75 × 600.89
  4. Step 4: Simplify right side
    1,987.82x = 1,791,108.82
  5. Step 5: Solve for x
    x = 1,791,108.82/1,987.82
  6. Step 6: Final answer
    x = 901.04

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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.