Home / 7,291.40-10,938.45-2,361.20

Finding the Fourth Proportional to 7,291.40, 10,938.45 and 2,361.20

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Solution

The fourth proportional to 7,291.40, 10,938.45 and 2,361.20 is: 3,542.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.40 : 10,938.45 = 2,361.20 : x
  2. Step 2: Convert to fraction form
    7,291.40/10,938.45 = 2,361.20/x
  3. Step 3: Cross multiply
    7,291.40x = 10,938.45 × 2,361.20
  4. Step 4: Simplify right side
    7,291.40x = 25,827,868.14
  5. Step 5: Solve for x
    x = 25,827,868.14/7,291.40
  6. Step 6: Final answer
    x = 3,542.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.