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Finding the Fourth Proportional to 6,918.30, 9,547.11 and 3,774.48

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Solution

The fourth proportional to 6,918.30, 9,547.11 and 3,774.48 is: 5,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.30 : 9,547.11 = 3,774.48 : x
  2. Step 2: Convert to fraction form
    6,918.30/9,547.11 = 3,774.48/x
  3. Step 3: Cross multiply
    6,918.30x = 9,547.11 × 3,774.48
  4. Step 4: Simplify right side
    6,918.30x = 36,035,375.75
  5. Step 5: Solve for x
    x = 36,035,375.75/6,918.30
  6. Step 6: Final answer
    x = 5,208.70

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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.