Home / 2,830.42-4,245.68-981.59

Finding the Fourth Proportional to 2,830.42, 4,245.68 and 981.59

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Solution

The fourth proportional to 2,830.42, 4,245.68 and 981.59 is: 1,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.42 : 4,245.68 = 981.59 : x
  2. Step 2: Convert to fraction form
    2,830.42/4,245.68 = 981.59/x
  3. Step 3: Cross multiply
    2,830.42x = 4,245.68 × 981.59
  4. Step 4: Simplify right side
    2,830.42x = 4,167,534.08
  5. Step 5: Solve for x
    x = 4,167,534.08/2,830.42
  6. Step 6: Final answer
    x = 1,472.41

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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.