Home / 5,160.65-7,121.58-2,802.74

Finding the Fourth Proportional to 5,160.65, 7,121.58 and 2,802.74

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Solution

The fourth proportional to 5,160.65, 7,121.58 and 2,802.74 is: 3,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.65 : 7,121.58 = 2,802.74 : x
  2. Step 2: Convert to fraction form
    5,160.65/7,121.58 = 2,802.74/x
  3. Step 3: Cross multiply
    5,160.65x = 7,121.58 × 2,802.74
  4. Step 4: Simplify right side
    5,160.65x = 19,959,937.13
  5. Step 5: Solve for x
    x = 19,959,937.13/5,160.65
  6. Step 6: Final answer
    x = 3,867.72

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1.5x scale

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.