Home / 4,885.40-7,328.61-1,422.65

Finding the Fourth Proportional to 4,885.40, 7,328.61 and 1,422.65

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Solution

The fourth proportional to 4,885.40, 7,328.61 and 1,422.65 is: 2,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.40 : 7,328.61 = 1,422.65 : x
  2. Step 2: Convert to fraction form
    4,885.40/7,328.61 = 1,422.65/x
  3. Step 3: Cross multiply
    4,885.40x = 7,328.61 × 1,422.65
  4. Step 4: Simplify right side
    4,885.40x = 10,426,047.02
  5. Step 5: Solve for x
    x = 10,426,047.02/4,885.40
  6. Step 6: Final answer
    x = 2,134.12

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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.