Home / 3,178.31-4,386.29-1,762.46

Finding the Fourth Proportional to 3,178.31, 4,386.29 and 1,762.46

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Solution

The fourth proportional to 3,178.31, 4,386.29 and 1,762.46 is: 2,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.31 : 4,386.29 = 1,762.46 : x
  2. Step 2: Convert to fraction form
    3,178.31/4,386.29 = 1,762.46/x
  3. Step 3: Cross multiply
    3,178.31x = 4,386.29 × 1,762.46
  4. Step 4: Simplify right side
    3,178.31x = 7,730,643.15
  5. Step 5: Solve for x
    x = 7,730,643.15/3,178.31
  6. Step 6: Final answer
    x = 2,432.31

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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.