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Finding the Fourth Proportional to 9,210.66, 12,710.79 and 5,019.18

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Solution

The fourth proportional to 9,210.66, 12,710.79 and 5,019.18 is: 6,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.66 : 12,710.79 = 5,019.18 : x
  2. Step 2: Convert to fraction form
    9,210.66/12,710.79 = 5,019.18/x
  3. Step 3: Cross multiply
    9,210.66x = 12,710.79 × 5,019.18
  4. Step 4: Simplify right side
    9,210.66x = 63,797,742.95
  5. Step 5: Solve for x
    x = 63,797,742.95/9,210.66
  6. Step 6: Final answer
    x = 6,926.51

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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.