Home / 5,454.36-8,139.67-4,871.16

Finding the Fourth Proportional to 5,454.36, 8,139.67 and 4,871.16

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Solution

The fourth proportional to 5,454.36, 8,139.67 and 4,871.16 is: 7,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,454.36 : 8,139.67 = 4,871.16 : x
  2. Step 2: Convert to fraction form
    5,454.36/8,139.67 = 4,871.16/x
  3. Step 3: Cross multiply
    5,454.36x = 8,139.67 × 4,871.16
  4. Step 4: Simplify right side
    5,454.36x = 39,649,634.92
  5. Step 5: Solve for x
    x = 39,649,634.92/5,454.36
  6. Step 6: Final answer
    x = 7,269.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.