Home / 2,258.80-3,117-1,263.60

Finding the Fourth Proportional to 2,258.80, 3,117 and 1,263.60

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Solution

The fourth proportional to 2,258.80, 3,117 and 1,263.60 is: 1,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,258.80 : 3,117 = 1,263.60 : x
  2. Step 2: Convert to fraction form
    2,258.80/3,117 = 1,263.60/x
  3. Step 3: Cross multiply
    2,258.80x = 3,117 × 1,263.60
  4. Step 4: Simplify right side
    2,258.80x = 3,938,641.20
  5. Step 5: Solve for x
    x = 3,938,641.20/2,258.80
  6. Step 6: Final answer
    x = 1,743.69

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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.