Home / 5,454.40-8,176.80-4,871.20

Finding the Fourth Proportional to 5,454.40, 8,176.80 and 4,871.20

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Solution

The fourth proportional to 5,454.40, 8,176.80 and 4,871.20 is: 7,302.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,454.40 : 8,176.80 = 4,871.20 : x
  2. Step 2: Convert to fraction form
    5,454.40/8,176.80 = 4,871.20/x
  3. Step 3: Cross multiply
    5,454.40x = 8,176.80 × 4,871.20
  4. Step 4: Simplify right side
    5,454.40x = 39,830,828.16
  5. Step 5: Solve for x
    x = 39,830,828.16/5,454.40
  6. Step 6: Final answer
    x = 7,302.51

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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.