Home / 1,987.36-2,981.12-600.72

Finding the Fourth Proportional to 1,987.36, 2,981.12 and 600.72

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Solution

The fourth proportional to 1,987.36, 2,981.12 and 600.72 is: 901.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.36 : 2,981.12 = 600.72 : x
  2. Step 2: Convert to fraction form
    1,987.36/2,981.12 = 600.72/x
  3. Step 3: Cross multiply
    1,987.36x = 2,981.12 × 600.72
  4. Step 4: Simplify right side
    1,987.36x = 1,790,818.41
  5. Step 5: Solve for x
    x = 1,790,818.41/1,987.36
  6. Step 6: Final answer
    x = 901.10

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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.