Home / 1,254.12-1,880.10-1,246.20

Finding the Fourth Proportional to 1,254.12, 1,880.10 and 1,246.20

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Solution

The fourth proportional to 1,254.12, 1,880.10 and 1,246.20 is: 1,868.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.12 : 1,880.10 = 1,246.20 : x
  2. Step 2: Convert to fraction form
    1,254.12/1,880.10 = 1,246.20/x
  3. Step 3: Cross multiply
    1,254.12x = 1,880.10 × 1,246.20
  4. Step 4: Simplify right side
    1,254.12x = 2,342,980.62
  5. Step 5: Solve for x
    x = 2,342,980.62/1,254.12
  6. Step 6: Final answer
    x = 1,868.23

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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.