Home / 1,360.20-2,038.14-872.85

Finding the Fourth Proportional to 1,360.20, 2,038.14 and 872.85

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Solution

The fourth proportional to 1,360.20, 2,038.14 and 872.85 is: 1,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.20 : 2,038.14 = 872.85 : x
  2. Step 2: Convert to fraction form
    1,360.20/2,038.14 = 872.85/x
  3. Step 3: Cross multiply
    1,360.20x = 2,038.14 × 872.85
  4. Step 4: Simplify right side
    1,360.20x = 1,778,990.50
  5. Step 5: Solve for x
    x = 1,778,990.50/1,360.20
  6. Step 6: Final answer
    x = 1,307.89

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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.