Home / 2,827.40-4,242.90-1,657.40

Finding the Fourth Proportional to 2,827.40, 4,242.90 and 1,657.40

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Solution

The fourth proportional to 2,827.40, 4,242.90 and 1,657.40 is: 2,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,827.40 : 4,242.90 = 1,657.40 : x
  2. Step 2: Convert to fraction form
    2,827.40/4,242.90 = 1,657.40/x
  3. Step 3: Cross multiply
    2,827.40x = 4,242.90 × 1,657.40
  4. Step 4: Simplify right side
    2,827.40x = 7,032,182.46
  5. Step 5: Solve for x
    x = 7,032,182.46/2,827.40
  6. Step 6: Final answer
    x = 2,487.16

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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.