Home / 6,857.20-10,271.40-6,127.60

Finding the Fourth Proportional to 6,857.20, 10,271.40 and 6,127.60

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Solution

The fourth proportional to 6,857.20, 10,271.40 and 6,127.60 is: 9,178.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,857.20 : 10,271.40 = 6,127.60 : x
  2. Step 2: Convert to fraction form
    6,857.20/10,271.40 = 6,127.60/x
  3. Step 3: Cross multiply
    6,857.20x = 10,271.40 × 6,127.60
  4. Step 4: Simplify right side
    6,857.20x = 62,939,030.64
  5. Step 5: Solve for x
    x = 62,939,030.64/6,857.20
  6. Step 6: Final answer
    x = 9,178.53

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1.5x scale

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.