Home / 9,261.39-12,778.74-5,485.74

Finding the Fourth Proportional to 9,261.39, 12,778.74 and 5,485.74

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Solution

The fourth proportional to 9,261.39, 12,778.74 and 5,485.74 is: 7,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.39 : 12,778.74 = 5,485.74 : x
  2. Step 2: Convert to fraction form
    9,261.39/12,778.74 = 5,485.74/x
  3. Step 3: Cross multiply
    9,261.39x = 12,778.74 × 5,485.74
  4. Step 4: Simplify right side
    9,261.39x = 70,100,845.17
  5. Step 5: Solve for x
    x = 70,100,845.17/9,261.39
  6. Step 6: Final answer
    x = 7,569.15

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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.