Home / 2,386.48-3,581.80-1,276.78

Finding the Fourth Proportional to 2,386.48, 3,581.80 and 1,276.78

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Solution

The fourth proportional to 2,386.48, 3,581.80 and 1,276.78 is: 1,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.48 : 3,581.80 = 1,276.78 : x
  2. Step 2: Convert to fraction form
    2,386.48/3,581.80 = 1,276.78/x
  3. Step 3: Cross multiply
    2,386.48x = 3,581.80 × 1,276.78
  4. Step 4: Simplify right side
    2,386.48x = 4,573,170.60
  5. Step 5: Solve for x
    x = 4,573,170.60/2,386.48
  6. Step 6: Final answer
    x = 1,916.28

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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.