Home / 7,218.12-10,826.40-2,287.80

Finding the Fourth Proportional to 7,218.12, 10,826.40 and 2,287.80

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Solution

The fourth proportional to 7,218.12, 10,826.40 and 2,287.80 is: 3,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.12 : 10,826.40 = 2,287.80 : x
  2. Step 2: Convert to fraction form
    7,218.12/10,826.40 = 2,287.80/x
  3. Step 3: Cross multiply
    7,218.12x = 10,826.40 × 2,287.80
  4. Step 4: Simplify right side
    7,218.12x = 24,768,637.92
  5. Step 5: Solve for x
    x = 24,768,637.92/7,218.12
  6. Step 6: Final answer
    x = 3,431.45

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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.