Home / 3,039.13-4,558.70-987.13

Finding the Fourth Proportional to 3,039.13, 4,558.70 and 987.13

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Solution

The fourth proportional to 3,039.13, 4,558.70 and 987.13 is: 1,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.13 : 4,558.70 = 987.13 : x
  2. Step 2: Convert to fraction form
    3,039.13/4,558.70 = 987.13/x
  3. Step 3: Cross multiply
    3,039.13x = 4,558.70 × 987.13
  4. Step 4: Simplify right side
    3,039.13x = 4,500,029.53
  5. Step 5: Solve for x
    x = 4,500,029.53/3,039.13
  6. Step 6: Final answer
    x = 1,480.70

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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.