Home / 1,224.34-1,684.20-1,025.08

Finding the Fourth Proportional to 1,224.34, 1,684.20 and 1,025.08

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Solution

The fourth proportional to 1,224.34, 1,684.20 and 1,025.08 is: 1,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.34 : 1,684.20 = 1,025.08 : x
  2. Step 2: Convert to fraction form
    1,224.34/1,684.20 = 1,025.08/x
  3. Step 3: Cross multiply
    1,224.34x = 1,684.20 × 1,025.08
  4. Step 4: Simplify right side
    1,224.34x = 1,726,439.74
  5. Step 5: Solve for x
    x = 1,726,439.74/1,224.34
  6. Step 6: Final answer
    x = 1,410.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.