Home / 3,428.34-4,731.06-1,856.40

Finding the Fourth Proportional to 3,428.34, 4,731.06 and 1,856.40

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Solution

The fourth proportional to 3,428.34, 4,731.06 and 1,856.40 is: 2,561.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.34 : 4,731.06 = 1,856.40 : x
  2. Step 2: Convert to fraction form
    3,428.34/4,731.06 = 1,856.40/x
  3. Step 3: Cross multiply
    3,428.34x = 4,731.06 × 1,856.40
  4. Step 4: Simplify right side
    3,428.34x = 8,782,739.78
  5. Step 5: Solve for x
    x = 8,782,739.78/3,428.34
  6. Step 6: Final answer
    x = 2,561.81

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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.