Home / 9,315.20-12,855.03-5,066.31

Finding the Fourth Proportional to 9,315.20, 12,855.03 and 5,066.31

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Solution

The fourth proportional to 9,315.20, 12,855.03 and 5,066.31 is: 6,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.20 : 12,855.03 = 5,066.31 : x
  2. Step 2: Convert to fraction form
    9,315.20/12,855.03 = 5,066.31/x
  3. Step 3: Cross multiply
    9,315.20x = 12,855.03 × 5,066.31
  4. Step 4: Simplify right side
    9,315.20x = 65,127,541.71
  5. Step 5: Solve for x
    x = 65,127,541.71/9,315.20
  6. Step 6: Final answer
    x = 6,991.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.