Home / 6,621.60-9,143.74-4,940.08

Finding the Fourth Proportional to 6,621.60, 9,143.74 and 4,940.08

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Solution

The fourth proportional to 6,621.60, 9,143.74 and 4,940.08 is: 6,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.60 : 9,143.74 = 4,940.08 : x
  2. Step 2: Convert to fraction form
    6,621.60/9,143.74 = 4,940.08/x
  3. Step 3: Cross multiply
    6,621.60x = 9,143.74 × 4,940.08
  4. Step 4: Simplify right side
    6,621.60x = 45,170,807.10
  5. Step 5: Solve for x
    x = 45,170,807.10/6,621.60
  6. Step 6: Final answer
    x = 6,821.74

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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.