Home / 2,870.07-4,305.11-1,115.88

Finding the Fourth Proportional to 2,870.07, 4,305.11 and 1,115.88

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Solution

The fourth proportional to 2,870.07, 4,305.11 and 1,115.88 is: 1,673.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.07 : 4,305.11 = 1,115.88 : x
  2. Step 2: Convert to fraction form
    2,870.07/4,305.11 = 1,115.88/x
  3. Step 3: Cross multiply
    2,870.07x = 4,305.11 × 1,115.88
  4. Step 4: Simplify right side
    2,870.07x = 4,803,980.57
  5. Step 5: Solve for x
    x = 4,803,980.57/2,870.07
  6. Step 6: Final answer
    x = 1,673.82

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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.