Home / 5,172.64-7,758.96-1,277.08

Finding the Fourth Proportional to 5,172.64, 7,758.96 and 1,277.08

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Solution

The fourth proportional to 5,172.64, 7,758.96 and 1,277.08 is: 1,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.64 : 7,758.96 = 1,277.08 : x
  2. Step 2: Convert to fraction form
    5,172.64/7,758.96 = 1,277.08/x
  3. Step 3: Cross multiply
    5,172.64x = 7,758.96 × 1,277.08
  4. Step 4: Simplify right side
    5,172.64x = 9,908,812.64
  5. Step 5: Solve for x
    x = 9,908,812.64/5,172.64
  6. Step 6: Final answer
    x = 1,915.62

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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.