Home / 4,284.78-6,422.85-1,686.30

Finding the Fourth Proportional to 4,284.78, 6,422.85 and 1,686.30

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Solution

The fourth proportional to 4,284.78, 6,422.85 and 1,686.30 is: 2,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,284.78 : 6,422.85 = 1,686.30 : x
  2. Step 2: Convert to fraction form
    4,284.78/6,422.85 = 1,686.30/x
  3. Step 3: Cross multiply
    4,284.78x = 6,422.85 × 1,686.30
  4. Step 4: Simplify right side
    4,284.78x = 10,830,851.96
  5. Step 5: Solve for x
    x = 10,830,851.96/4,284.78
  6. Step 6: Final answer
    x = 2,527.75

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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.