Home / 3,139.48-4,352.33-2,973.08

Finding the Fourth Proportional to 3,139.48, 4,352.33 and 2,973.08

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Solution

The fourth proportional to 3,139.48, 4,352.33 and 2,973.08 is: 4,121.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.48 : 4,352.33 = 2,973.08 : x
  2. Step 2: Convert to fraction form
    3,139.48/4,352.33 = 2,973.08/x
  3. Step 3: Cross multiply
    3,139.48x = 4,352.33 × 2,973.08
  4. Step 4: Simplify right side
    3,139.48x = 12,939,825.28
  5. Step 5: Solve for x
    x = 12,939,825.28/3,139.48
  6. Step 6: Final answer
    x = 4,121.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.