Home / 8,068.40-12,102.60-5,109.20

Finding the Fourth Proportional to 8,068.40, 12,102.60 and 5,109.20

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Solution

The fourth proportional to 8,068.40, 12,102.60 and 5,109.20 is: 7,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,068.40 : 12,102.60 = 5,109.20 : x
  2. Step 2: Convert to fraction form
    8,068.40/12,102.60 = 5,109.20/x
  3. Step 3: Cross multiply
    8,068.40x = 12,102.60 × 5,109.20
  4. Step 4: Simplify right side
    8,068.40x = 61,834,603.92
  5. Step 5: Solve for x
    x = 61,834,603.92/8,068.40
  6. Step 6: Final answer
    x = 7,663.80

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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.