Home / 4,720.27-7,080.78-1,257.07

Finding the Fourth Proportional to 4,720.27, 7,080.78 and 1,257.07

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Solution

The fourth proportional to 4,720.27, 7,080.78 and 1,257.07 is: 1,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.27 : 7,080.78 = 1,257.07 : x
  2. Step 2: Convert to fraction form
    4,720.27/7,080.78 = 1,257.07/x
  3. Step 3: Cross multiply
    4,720.27x = 7,080.78 × 1,257.07
  4. Step 4: Simplify right side
    4,720.27x = 8,901,036.11
  5. Step 5: Solve for x
    x = 8,901,036.11/4,720.27
  6. Step 6: Final answer
    x = 1,885.70

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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.