Home / 2,291.36-3,159.20-1,871.28

Finding the Fourth Proportional to 2,291.36, 3,159.20 and 1,871.28

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Solution

The fourth proportional to 2,291.36, 3,159.20 and 1,871.28 is: 2,580.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.36 : 3,159.20 = 1,871.28 : x
  2. Step 2: Convert to fraction form
    2,291.36/3,159.20 = 1,871.28/x
  3. Step 3: Cross multiply
    2,291.36x = 3,159.20 × 1,871.28
  4. Step 4: Simplify right side
    2,291.36x = 5,911,752.45
  5. Step 5: Solve for x
    x = 5,911,752.45/2,291.36
  6. Step 6: Final answer
    x = 2,580.02

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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.