Home / 2,256.40-3,113.48-1,261.52

Finding the Fourth Proportional to 2,256.40, 3,113.48 and 1,261.52

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Solution

The fourth proportional to 2,256.40, 3,113.48 and 1,261.52 is: 1,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.40 : 3,113.48 = 1,261.52 : x
  2. Step 2: Convert to fraction form
    2,256.40/3,113.48 = 1,261.52/x
  3. Step 3: Cross multiply
    2,256.40x = 3,113.48 × 1,261.52
  4. Step 4: Simplify right side
    2,256.40x = 3,927,717.29
  5. Step 5: Solve for x
    x = 3,927,717.29/2,256.40
  6. Step 6: Final answer
    x = 1,740.70

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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.