Home / 2,802.19-3,866.79-1,543.05

Finding the Fourth Proportional to 2,802.19, 3,866.79 and 1,543.05

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Solution

The fourth proportional to 2,802.19, 3,866.79 and 1,543.05 is: 2,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.19 : 3,866.79 = 1,543.05 : x
  2. Step 2: Convert to fraction form
    2,802.19/3,866.79 = 1,543.05/x
  3. Step 3: Cross multiply
    2,802.19x = 3,866.79 × 1,543.05
  4. Step 4: Simplify right side
    2,802.19x = 5,966,650.31
  5. Step 5: Solve for x
    x = 5,966,650.31/2,802.19
  6. Step 6: Final answer
    x = 2,129.28

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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.