Home / 9,315.28-12,855.12-5,066.34

Finding the Fourth Proportional to 9,315.28, 12,855.12 and 5,066.34

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Solution

The fourth proportional to 9,315.28, 12,855.12 and 5,066.34 is: 6,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.28 : 12,855.12 = 5,066.34 : x
  2. Step 2: Convert to fraction form
    9,315.28/12,855.12 = 5,066.34/x
  3. Step 3: Cross multiply
    9,315.28x = 12,855.12 × 5,066.34
  4. Step 4: Simplify right side
    9,315.28x = 65,128,442.26
  5. Step 5: Solve for x
    x = 65,128,442.26/9,315.28
  6. Step 6: Final answer
    x = 6,991.57

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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.