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Finding the Fourth Proportional to 8,795.64, 13,130.72 and 8,488.08

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Solution

The fourth proportional to 8,795.64, 13,130.72 and 8,488.08 is: 12,671.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,795.64 : 13,130.72 = 8,488.08 : x
  2. Step 2: Convert to fraction form
    8,795.64/13,130.72 = 8,488.08/x
  3. Step 3: Cross multiply
    8,795.64x = 13,130.72 × 8,488.08
  4. Step 4: Simplify right side
    8,795.64x = 111,454,601.82
  5. Step 5: Solve for x
    x = 111,454,601.82/8,795.64
  6. Step 6: Final answer
    x = 12,671.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.