Home / 2,159.52-2,980.40-1,276.08

Finding the Fourth Proportional to 2,159.52, 2,980.40 and 1,276.08

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Solution

The fourth proportional to 2,159.52, 2,980.40 and 1,276.08 is: 1,761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.52 : 2,980.40 = 1,276.08 : x
  2. Step 2: Convert to fraction form
    2,159.52/2,980.40 = 1,276.08/x
  3. Step 3: Cross multiply
    2,159.52x = 2,980.40 × 1,276.08
  4. Step 4: Simplify right side
    2,159.52x = 3,803,228.83
  5. Step 5: Solve for x
    x = 3,803,228.83/2,159.52
  6. Step 6: Final answer
    x = 1,761.15

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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.