Home / 2,870.62-4,305.95-1,139.24

Finding the Fourth Proportional to 2,870.62, 4,305.95 and 1,139.24

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Solution

The fourth proportional to 2,870.62, 4,305.95 and 1,139.24 is: 1,708.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.62 : 4,305.95 = 1,139.24 : x
  2. Step 2: Convert to fraction form
    2,870.62/4,305.95 = 1,139.24/x
  3. Step 3: Cross multiply
    2,870.62x = 4,305.95 × 1,139.24
  4. Step 4: Simplify right side
    2,870.62x = 4,905,510.48
  5. Step 5: Solve for x
    x = 4,905,510.48/2,870.62
  6. Step 6: Final answer
    x = 1,708.87

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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.