Home / 2,386.90-3,581.75-1,000.13

Finding the Fourth Proportional to 2,386.90, 3,581.75 and 1,000.13

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Solution

The fourth proportional to 2,386.90, 3,581.75 and 1,000.13 is: 1,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.90 : 3,581.75 = 1,000.13 : x
  2. Step 2: Convert to fraction form
    2,386.90/3,581.75 = 1,000.13/x
  3. Step 3: Cross multiply
    2,386.90x = 3,581.75 × 1,000.13
  4. Step 4: Simplify right side
    2,386.90x = 3,582,215.63
  5. Step 5: Solve for x
    x = 3,582,215.63/2,386.90
  6. Step 6: Final answer
    x = 1,500.78

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1.5x scale

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.