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Finding the Fourth Proportional to 8,931.66, 12,325.87 and 4,953.21

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Solution

The fourth proportional to 8,931.66, 12,325.87 and 4,953.21 is: 6,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.66 : 12,325.87 = 4,953.21 : x
  2. Step 2: Convert to fraction form
    8,931.66/12,325.87 = 4,953.21/x
  3. Step 3: Cross multiply
    8,931.66x = 12,325.87 × 4,953.21
  4. Step 4: Simplify right side
    8,931.66x = 61,052,622.54
  5. Step 5: Solve for x
    x = 61,052,622.54/8,931.66
  6. Step 6: Final answer
    x = 6,835.53

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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.