Home / 3,484.78-4,808.76-1,912.57

Finding the Fourth Proportional to 3,484.78, 4,808.76 and 1,912.57

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Solution

The fourth proportional to 3,484.78, 4,808.76 and 1,912.57 is: 2,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,484.78 : 4,808.76 = 1,912.57 : x
  2. Step 2: Convert to fraction form
    3,484.78/4,808.76 = 1,912.57/x
  3. Step 3: Cross multiply
    3,484.78x = 4,808.76 × 1,912.57
  4. Step 4: Simplify right side
    3,484.78x = 9,197,090.11
  5. Step 5: Solve for x
    x = 9,197,090.11/3,484.78
  6. Step 6: Final answer
    x = 2,639.22

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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.