Home / 6,271.20-9,358.40-5,615.10

Finding the Fourth Proportional to 6,271.20, 9,358.40 and 5,615.10

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Solution

The fourth proportional to 6,271.20, 9,358.40 and 5,615.10 is: 8,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,271.20 : 9,358.40 = 5,615.10 : x
  2. Step 2: Convert to fraction form
    6,271.20/9,358.40 = 5,615.10/x
  3. Step 3: Cross multiply
    6,271.20x = 9,358.40 × 5,615.10
  4. Step 4: Simplify right side
    6,271.20x = 52,548,351.84
  5. Step 5: Solve for x
    x = 52,548,351.84/6,271.20
  6. Step 6: Final answer
    x = 8,379.31

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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.