Home / 9,305.14-12,840.78-5,113.30

Finding the Fourth Proportional to 9,305.14, 12,840.78 and 5,113.30

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Solution

The fourth proportional to 9,305.14, 12,840.78 and 5,113.30 is: 7,056.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,305.14 : 12,840.78 = 5,113.30 : x
  2. Step 2: Convert to fraction form
    9,305.14/12,840.78 = 5,113.30/x
  3. Step 3: Cross multiply
    9,305.14x = 12,840.78 × 5,113.30
  4. Step 4: Simplify right side
    9,305.14x = 65,658,760.37
  5. Step 5: Solve for x
    x = 65,658,760.37/9,305.14
  6. Step 6: Final answer
    x = 7,056.18

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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.