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Finding the Fourth Proportional to 8,746.80, 12,068.02 and 5,390.16

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Solution

The fourth proportional to 8,746.80, 12,068.02 and 5,390.16 is: 7,436.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,746.80 : 12,068.02 = 5,390.16 : x
  2. Step 2: Convert to fraction form
    8,746.80/12,068.02 = 5,390.16/x
  3. Step 3: Cross multiply
    8,746.80x = 12,068.02 × 5,390.16
  4. Step 4: Simplify right side
    8,746.80x = 65,048,558.68
  5. Step 5: Solve for x
    x = 65,048,558.68/8,746.80
  6. Step 6: Final answer
    x = 7,436.84

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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.