Home / 1,924.40-2,655.60-1,261.28

Finding the Fourth Proportional to 1,924.40, 2,655.60 and 1,261.28

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Solution

The fourth proportional to 1,924.40, 2,655.60 and 1,261.28 is: 1,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,924.40 : 2,655.60 = 1,261.28 : x
  2. Step 2: Convert to fraction form
    1,924.40/2,655.60 = 1,261.28/x
  3. Step 3: Cross multiply
    1,924.40x = 2,655.60 × 1,261.28
  4. Step 4: Simplify right side
    1,924.40x = 3,349,455.17
  5. Step 5: Solve for x
    x = 3,349,455.17/1,924.40
  6. Step 6: Final answer
    x = 1,740.52

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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.