Home / 2,802.39-3,867.56-1,543.70

Finding the Fourth Proportional to 2,802.39, 3,867.56 and 1,543.70

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Solution

The fourth proportional to 2,802.39, 3,867.56 and 1,543.70 is: 2,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.39 : 3,867.56 = 1,543.70 : x
  2. Step 2: Convert to fraction form
    2,802.39/3,867.56 = 1,543.70/x
  3. Step 3: Cross multiply
    2,802.39x = 3,867.56 × 1,543.70
  4. Step 4: Simplify right side
    2,802.39x = 5,970,344.65
  5. Step 5: Solve for x
    x = 5,970,344.65/2,802.39
  6. Step 6: Final answer
    x = 2,130.45

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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.