Home / 2,386.60-3,581.26-1,865.12

Finding the Fourth Proportional to 2,386.60, 3,581.26 and 1,865.12

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Solution

The fourth proportional to 2,386.60, 3,581.26 and 1,865.12 is: 2,798.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.60 : 3,581.26 = 1,865.12 : x
  2. Step 2: Convert to fraction form
    2,386.60/3,581.26 = 1,865.12/x
  3. Step 3: Cross multiply
    2,386.60x = 3,581.26 × 1,865.12
  4. Step 4: Simplify right side
    2,386.60x = 6,679,479.65
  5. Step 5: Solve for x
    x = 6,679,479.65/2,386.60
  6. Step 6: Final answer
    x = 2,798.74

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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.