Home / 5,172.66-7,758.99-1,277.07

Finding the Fourth Proportional to 5,172.66, 7,758.99 and 1,277.07

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Solution

The fourth proportional to 5,172.66, 7,758.99 and 1,277.07 is: 1,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.66 : 7,758.99 = 1,277.07 : x
  2. Step 2: Convert to fraction form
    5,172.66/7,758.99 = 1,277.07/x
  3. Step 3: Cross multiply
    5,172.66x = 7,758.99 × 1,277.07
  4. Step 4: Simplify right side
    5,172.66x = 9,908,744.26
  5. Step 5: Solve for x
    x = 9,908,744.26/5,172.66
  6. Step 6: Final answer
    x = 1,915.60

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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.