Home / 9,272.80-12,798.48-6,129.28

Finding the Fourth Proportional to 9,272.80, 12,798.48 and 6,129.28

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Solution

The fourth proportional to 9,272.80, 12,798.48 and 6,129.28 is: 8,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.80 : 12,798.48 = 6,129.28 : x
  2. Step 2: Convert to fraction form
    9,272.80/12,798.48 = 6,129.28/x
  3. Step 3: Cross multiply
    9,272.80x = 12,798.48 × 6,129.28
  4. Step 4: Simplify right side
    9,272.80x = 78,445,467.49
  5. Step 5: Solve for x
    x = 78,445,467.49/9,272.80
  6. Step 6: Final answer
    x = 8,459.74

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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.