Home / 8,906.06-12,290.66-5,130.45

Finding the Fourth Proportional to 8,906.06, 12,290.66 and 5,130.45

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Solution

The fourth proportional to 8,906.06, 12,290.66 and 5,130.45 is: 7,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.06 : 12,290.66 = 5,130.45 : x
  2. Step 2: Convert to fraction form
    8,906.06/12,290.66 = 5,130.45/x
  3. Step 3: Cross multiply
    8,906.06x = 12,290.66 × 5,130.45
  4. Step 4: Simplify right side
    8,906.06x = 63,056,590.94
  5. Step 5: Solve for x
    x = 63,056,590.94/8,906.06
  6. Step 6: Final answer
    x = 7,080.19

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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.