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Finding the Fourth Proportional to 8,560.32, 12,840.48 and 4,672.32

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Solution

The fourth proportional to 8,560.32, 12,840.48 and 4,672.32 is: 7,008.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.32 : 12,840.48 = 4,672.32 : x
  2. Step 2: Convert to fraction form
    8,560.32/12,840.48 = 4,672.32/x
  3. Step 3: Cross multiply
    8,560.32x = 12,840.48 × 4,672.32
  4. Step 4: Simplify right side
    8,560.32x = 59,994,831.51
  5. Step 5: Solve for x
    x = 59,994,831.51/8,560.32
  6. Step 6: Final answer
    x = 7,008.48

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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.