Home / 1,500.36-2,250.69-389.78

Finding the Fourth Proportional to 1,500.36, 2,250.69 and 389.78

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Solution

The fourth proportional to 1,500.36, 2,250.69 and 389.78 is: 584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500.36 : 2,250.69 = 389.78 : x
  2. Step 2: Convert to fraction form
    1,500.36/2,250.69 = 389.78/x
  3. Step 3: Cross multiply
    1,500.36x = 2,250.69 × 389.78
  4. Step 4: Simplify right side
    1,500.36x = 877,269.67
  5. Step 5: Solve for x
    x = 877,269.67/1,500.36
  6. Step 6: Final answer
    x = 584.70

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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.