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Finding the Fourth Proportional to 2,903.40, 4,001.22 and 2,860.20

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Solution

The fourth proportional to 2,903.40, 4,001.22 and 2,860.20 is: 3,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.40 : 4,001.22 = 2,860.20 : x
  2. Step 2: Convert to fraction form
    2,903.40/4,001.22 = 2,860.20/x
  3. Step 3: Cross multiply
    2,903.40x = 4,001.22 × 2,860.20
  4. Step 4: Simplify right side
    2,903.40x = 11,444,289.44
  5. Step 5: Solve for x
    x = 11,444,289.44/2,903.40
  6. Step 6: Final answer
    x = 3,941.69

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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.