Home / 2,160.12-2,980.08-1,373.88

Finding the Fourth Proportional to 2,160.12, 2,980.08 and 1,373.88

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Solution

The fourth proportional to 2,160.12, 2,980.08 and 1,373.88 is: 1,895.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.12 : 2,980.08 = 1,373.88 : x
  2. Step 2: Convert to fraction form
    2,160.12/2,980.08 = 1,373.88/x
  3. Step 3: Cross multiply
    2,160.12x = 2,980.08 × 1,373.88
  4. Step 4: Simplify right side
    2,160.12x = 4,094,272.31
  5. Step 5: Solve for x
    x = 4,094,272.31/2,160.12
  6. Step 6: Final answer
    x = 1,895.39

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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.