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Finding the Fourth Proportional to 8,702.45, 12,009.20 and 4,925.54

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Solution

The fourth proportional to 8,702.45, 12,009.20 and 4,925.54 is: 6,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.45 : 12,009.20 = 4,925.54 : x
  2. Step 2: Convert to fraction form
    8,702.45/12,009.20 = 4,925.54/x
  3. Step 3: Cross multiply
    8,702.45x = 12,009.20 × 4,925.54
  4. Step 4: Simplify right side
    8,702.45x = 59,151,800.36
  5. Step 5: Solve for x
    x = 59,151,800.36/8,702.45
  6. Step 6: Final answer
    x = 6,797.15

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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.