Home / 2,309.95-3,187.76-1,315.24

Finding the Fourth Proportional to 2,309.95, 3,187.76 and 1,315.24

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Solution

The fourth proportional to 2,309.95, 3,187.76 and 1,315.24 is: 1,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.95 : 3,187.76 = 1,315.24 : x
  2. Step 2: Convert to fraction form
    2,309.95/3,187.76 = 1,315.24/x
  3. Step 3: Cross multiply
    2,309.95x = 3,187.76 × 1,315.24
  4. Step 4: Simplify right side
    2,309.95x = 4,192,654.92
  5. Step 5: Solve for x
    x = 4,192,654.92/2,309.95
  6. Step 6: Final answer
    x = 1,815.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.