Home / 2,160.17-2,980.99-1,276.05

Finding the Fourth Proportional to 2,160.17, 2,980.99 and 1,276.05

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Solution

The fourth proportional to 2,160.17, 2,980.99 and 1,276.05 is: 1,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.17 : 2,980.99 = 1,276.05 : x
  2. Step 2: Convert to fraction form
    2,160.17/2,980.99 = 1,276.05/x
  3. Step 3: Cross multiply
    2,160.17x = 2,980.99 × 1,276.05
  4. Step 4: Simplify right side
    2,160.17x = 3,803,892.29
  5. Step 5: Solve for x
    x = 3,803,892.29/2,160.17
  6. Step 6: Final answer
    x = 1,760.93

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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.