Home / 2,925.12-4,032.48-2,421.28

Finding the Fourth Proportional to 2,925.12, 4,032.48 and 2,421.28

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Solution

The fourth proportional to 2,925.12, 4,032.48 and 2,421.28 is: 3,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.12 : 4,032.48 = 2,421.28 : x
  2. Step 2: Convert to fraction form
    2,925.12/4,032.48 = 2,421.28/x
  3. Step 3: Cross multiply
    2,925.12x = 4,032.48 × 2,421.28
  4. Step 4: Simplify right side
    2,925.12x = 9,763,763.17
  5. Step 5: Solve for x
    x = 9,763,763.17/2,925.12
  6. Step 6: Final answer
    x = 3,337.90

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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.