Home / 7,146.40-10,719.60-3,258.40

Finding the Fourth Proportional to 7,146.40, 10,719.60 and 3,258.40

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Solution

The fourth proportional to 7,146.40, 10,719.60 and 3,258.40 is: 4,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.40 : 10,719.60 = 3,258.40 : x
  2. Step 2: Convert to fraction form
    7,146.40/10,719.60 = 3,258.40/x
  3. Step 3: Cross multiply
    7,146.40x = 10,719.60 × 3,258.40
  4. Step 4: Simplify right side
    7,146.40x = 34,928,744.64
  5. Step 5: Solve for x
    x = 34,928,744.64/7,146.40
  6. Step 6: Final answer
    x = 4,887.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.