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Finding the Fourth Proportional to 8,903.76, 12,284.16 and 5,319.82

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Solution

The fourth proportional to 8,903.76, 12,284.16 and 5,319.82 is: 7,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.76 : 12,284.16 = 5,319.82 : x
  2. Step 2: Convert to fraction form
    8,903.76/12,284.16 = 5,319.82/x
  3. Step 3: Cross multiply
    8,903.76x = 12,284.16 × 5,319.82
  4. Step 4: Simplify right side
    8,903.76x = 65,349,458.63
  5. Step 5: Solve for x
    x = 65,349,458.63/8,903.76
  6. Step 6: Final answer
    x = 7,339.54

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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.