Home / 2,407.18-3,320.38-2,122.87

Finding the Fourth Proportional to 2,407.18, 3,320.38 and 2,122.87

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Solution

The fourth proportional to 2,407.18, 3,320.38 and 2,122.87 is: 2,928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.18 : 3,320.38 = 2,122.87 : x
  2. Step 2: Convert to fraction form
    2,407.18/3,320.38 = 2,122.87/x
  3. Step 3: Cross multiply
    2,407.18x = 3,320.38 × 2,122.87
  4. Step 4: Simplify right side
    2,407.18x = 7,048,735.09
  5. Step 5: Solve for x
    x = 7,048,735.09/2,407.18
  6. Step 6: Final answer
    x = 2,928.21

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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.