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Finding the Fourth Proportional to 3,039.48, 4,559.14 and 959.40

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Solution

The fourth proportional to 3,039.48, 4,559.14 and 959.40 is: 1,439.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.48 : 4,559.14 = 959.40 : x
  2. Step 2: Convert to fraction form
    3,039.48/4,559.14 = 959.40/x
  3. Step 3: Cross multiply
    3,039.48x = 4,559.14 × 959.40
  4. Step 4: Simplify right side
    3,039.48x = 4,374,038.92
  5. Step 5: Solve for x
    x = 4,374,038.92/3,039.48
  6. Step 6: Final answer
    x = 1,439.07

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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.