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Finding the Fourth Proportional to 7,878.48, 11,810.04 and 3,497.04

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Solution

The fourth proportional to 7,878.48, 11,810.04 and 3,497.04 is: 5,242.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.48 : 11,810.04 = 3,497.04 : x
  2. Step 2: Convert to fraction form
    7,878.48/11,810.04 = 3,497.04/x
  3. Step 3: Cross multiply
    7,878.48x = 11,810.04 × 3,497.04
  4. Step 4: Simplify right side
    7,878.48x = 41,300,182.28
  5. Step 5: Solve for x
    x = 41,300,182.28/7,878.48
  6. Step 6: Final answer
    x = 5,242.15

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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.