Home / 3,315.64-4,951.28-3,147.16

Finding the Fourth Proportional to 3,315.64, 4,951.28 and 3,147.16

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Solution

The fourth proportional to 3,315.64, 4,951.28 and 3,147.16 is: 4,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.64 : 4,951.28 = 3,147.16 : x
  2. Step 2: Convert to fraction form
    3,315.64/4,951.28 = 3,147.16/x
  3. Step 3: Cross multiply
    3,315.64x = 4,951.28 × 3,147.16
  4. Step 4: Simplify right side
    3,315.64x = 15,582,470.36
  5. Step 5: Solve for x
    x = 15,582,470.36/3,315.64
  6. Step 6: Final answer
    x = 4,699.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.