Home / 7,327.31-10,111.64-3,970.13

Finding the Fourth Proportional to 7,327.31, 10,111.64 and 3,970.13

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Solution

The fourth proportional to 7,327.31, 10,111.64 and 3,970.13 is: 5,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,327.31 : 10,111.64 = 3,970.13 : x
  2. Step 2: Convert to fraction form
    7,327.31/10,111.64 = 3,970.13/x
  3. Step 3: Cross multiply
    7,327.31x = 10,111.64 × 3,970.13
  4. Step 4: Simplify right side
    7,327.31x = 40,144,454.90
  5. Step 5: Solve for x
    x = 40,144,454.90/7,327.31
  6. Step 6: Final answer
    x = 5,478.75

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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.