Home / 2,165.21-3,248-1,587.40

Finding the Fourth Proportional to 2,165.21, 3,248 and 1,587.40

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Solution

The fourth proportional to 2,165.21, 3,248 and 1,587.40 is: 2,381.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.21 : 3,248 = 1,587.40 : x
  2. Step 2: Convert to fraction form
    2,165.21/3,248 = 1,587.40/x
  3. Step 3: Cross multiply
    2,165.21x = 3,248 × 1,587.40
  4. Step 4: Simplify right side
    2,165.21x = 5,155,875.20
  5. Step 5: Solve for x
    x = 5,155,875.20/2,165.21
  6. Step 6: Final answer
    x = 2,381.24

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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.