Home / 4,478.78-6,720.35-1,810.29

Finding the Fourth Proportional to 4,478.78, 6,720.35 and 1,810.29

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Solution

The fourth proportional to 4,478.78, 6,720.35 and 1,810.29 is: 2,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.78 : 6,720.35 = 1,810.29 : x
  2. Step 2: Convert to fraction form
    4,478.78/6,720.35 = 1,810.29/x
  3. Step 3: Cross multiply
    4,478.78x = 6,720.35 × 1,810.29
  4. Step 4: Simplify right side
    4,478.78x = 12,165,782.40
  5. Step 5: Solve for x
    x = 12,165,782.40/4,478.78
  6. Step 6: Final answer
    x = 2,716.32

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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.