Home / 6,276.31-9,412.09-2,115.20

Finding the Fourth Proportional to 6,276.31, 9,412.09 and 2,115.20

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Solution

The fourth proportional to 6,276.31, 9,412.09 and 2,115.20 is: 3,172.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,276.31 : 9,412.09 = 2,115.20 : x
  2. Step 2: Convert to fraction form
    6,276.31/9,412.09 = 2,115.20/x
  3. Step 3: Cross multiply
    6,276.31x = 9,412.09 × 2,115.20
  4. Step 4: Simplify right side
    6,276.31x = 19,908,471.01
  5. Step 5: Solve for x
    x = 19,908,471.01/6,276.31
  6. Step 6: Final answer
    x = 3,172.00

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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.