Home / 9,102.39-12,529.71-7,847.60

Finding the Fourth Proportional to 9,102.39, 12,529.71 and 7,847.60

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Solution

The fourth proportional to 9,102.39, 12,529.71 and 7,847.60 is: 10,802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,102.39 : 12,529.71 = 7,847.60 : x
  2. Step 2: Convert to fraction form
    9,102.39/12,529.71 = 7,847.60/x
  3. Step 3: Cross multiply
    9,102.39x = 12,529.71 × 7,847.60
  4. Step 4: Simplify right side
    9,102.39x = 98,328,152.20
  5. Step 5: Solve for x
    x = 98,328,152.20/9,102.39
  6. Step 6: Final answer
    x = 10,802.45

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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.