Home / 3,139.88-4,330.44-2,386.16

Finding the Fourth Proportional to 3,139.88, 4,330.44 and 2,386.16

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Solution

The fourth proportional to 3,139.88, 4,330.44 and 2,386.16 is: 3,290.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.88 : 4,330.44 = 2,386.16 : x
  2. Step 2: Convert to fraction form
    3,139.88/4,330.44 = 2,386.16/x
  3. Step 3: Cross multiply
    3,139.88x = 4,330.44 × 2,386.16
  4. Step 4: Simplify right side
    3,139.88x = 10,333,122.71
  5. Step 5: Solve for x
    x = 10,333,122.71/3,139.88
  6. Step 6: Final answer
    x = 3,290.93

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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.