Home / 2,915.04-4,020.48-1,867.20

Finding the Fourth Proportional to 2,915.04, 4,020.48 and 1,867.20

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Solution

The fourth proportional to 2,915.04, 4,020.48 and 1,867.20 is: 2,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.04 : 4,020.48 = 1,867.20 : x
  2. Step 2: Convert to fraction form
    2,915.04/4,020.48 = 1,867.20/x
  3. Step 3: Cross multiply
    2,915.04x = 4,020.48 × 1,867.20
  4. Step 4: Simplify right side
    2,915.04x = 7,507,040.26
  5. Step 5: Solve for x
    x = 7,507,040.26/2,915.04
  6. Step 6: Final answer
    x = 2,575.28

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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.