Home / 4,720.78-6,514.99-3,151.50

Finding the Fourth Proportional to 4,720.78, 6,514.99 and 3,151.50

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Solution

The fourth proportional to 4,720.78, 6,514.99 and 3,151.50 is: 4,349.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.78 : 6,514.99 = 3,151.50 : x
  2. Step 2: Convert to fraction form
    4,720.78/6,514.99 = 3,151.50/x
  3. Step 3: Cross multiply
    4,720.78x = 6,514.99 × 3,151.50
  4. Step 4: Simplify right side
    4,720.78x = 20,531,990.99
  5. Step 5: Solve for x
    x = 20,531,990.99/4,720.78
  6. Step 6: Final answer
    x = 4,349.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.