Home / 10,520.74-15,783.66-3,946.99

Finding the Fourth Proportional to 10,520.74, 15,783.66 and 3,946.99

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Solution

The fourth proportional to 10,520.74, 15,783.66 and 3,946.99 is: 5,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.74 : 15,783.66 = 3,946.99 : x
  2. Step 2: Convert to fraction form
    10,520.74/15,783.66 = 3,946.99/x
  3. Step 3: Cross multiply
    10,520.74x = 15,783.66 × 3,946.99
  4. Step 4: Simplify right side
    10,520.74x = 62,297,948.18
  5. Step 5: Solve for x
    x = 62,297,948.18/10,520.74
  6. Step 6: Final answer
    x = 5,921.44

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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.