Home / 8,678.85-11,971.11-6,130.35

Finding the Fourth Proportional to 8,678.85, 11,971.11 and 6,130.35

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Solution

The fourth proportional to 8,678.85, 11,971.11 and 6,130.35 is: 8,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.85 : 11,971.11 = 6,130.35 : x
  2. Step 2: Convert to fraction form
    8,678.85/11,971.11 = 6,130.35/x
  3. Step 3: Cross multiply
    8,678.85x = 11,971.11 × 6,130.35
  4. Step 4: Simplify right side
    8,678.85x = 73,387,094.19
  5. Step 5: Solve for x
    x = 73,387,094.19/8,678.85
  6. Step 6: Final answer
    x = 8,455.85

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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.