Home / 2,574.90-3,862.35-1,479.78

Finding the Fourth Proportional to 2,574.90, 3,862.35 and 1,479.78

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Solution

The fourth proportional to 2,574.90, 3,862.35 and 1,479.78 is: 2,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,574.90 : 3,862.35 = 1,479.78 : x
  2. Step 2: Convert to fraction form
    2,574.90/3,862.35 = 1,479.78/x
  3. Step 3: Cross multiply
    2,574.90x = 3,862.35 × 1,479.78
  4. Step 4: Simplify right side
    2,574.90x = 5,715,428.28
  5. Step 5: Solve for x
    x = 5,715,428.28/2,574.90
  6. Step 6: Final answer
    x = 2,219.67

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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.