Home / 4,271.28-6,402.54-1,638.08

Finding the Fourth Proportional to 4,271.28, 6,402.54 and 1,638.08

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Solution

The fourth proportional to 4,271.28, 6,402.54 and 1,638.08 is: 2,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,271.28 : 6,402.54 = 1,638.08 : x
  2. Step 2: Convert to fraction form
    4,271.28/6,402.54 = 1,638.08/x
  3. Step 3: Cross multiply
    4,271.28x = 6,402.54 × 1,638.08
  4. Step 4: Simplify right side
    4,271.28x = 10,487,840.71
  5. Step 5: Solve for x
    x = 10,487,840.71/4,271.28
  6. Step 6: Final answer
    x = 2,455.43

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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.