Home / 2,985.66-4,117.32-2,231.10

Finding the Fourth Proportional to 2,985.66, 4,117.32 and 2,231.10

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Solution

The fourth proportional to 2,985.66, 4,117.32 and 2,231.10 is: 3,076.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.66 : 4,117.32 = 2,231.10 : x
  2. Step 2: Convert to fraction form
    2,985.66/4,117.32 = 2,231.10/x
  3. Step 3: Cross multiply
    2,985.66x = 4,117.32 × 2,231.10
  4. Step 4: Simplify right side
    2,985.66x = 9,186,152.65
  5. Step 5: Solve for x
    x = 9,186,152.65/2,985.66
  6. Step 6: Final answer
    x = 3,076.76

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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.