Home / 4,951.79-7,428.47-1,990.23

Finding the Fourth Proportional to 4,951.79, 7,428.47 and 1,990.23

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Solution

The fourth proportional to 4,951.79, 7,428.47 and 1,990.23 is: 2,985.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,951.79 : 7,428.47 = 1,990.23 : x
  2. Step 2: Convert to fraction form
    4,951.79/7,428.47 = 1,990.23/x
  3. Step 3: Cross multiply
    4,951.79x = 7,428.47 × 1,990.23
  4. Step 4: Simplify right side
    4,951.79x = 14,784,363.85
  5. Step 5: Solve for x
    x = 14,784,363.85/4,951.79
  6. Step 6: Final answer
    x = 2,985.66

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Double scale
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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.