Home / 3,521.80-4,861.14-2,030.78

Finding the Fourth Proportional to 3,521.80, 4,861.14 and 2,030.78

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Solution

The fourth proportional to 3,521.80, 4,861.14 and 2,030.78 is: 2,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.80 : 4,861.14 = 2,030.78 : x
  2. Step 2: Convert to fraction form
    3,521.80/4,861.14 = 2,030.78/x
  3. Step 3: Cross multiply
    3,521.80x = 4,861.14 × 2,030.78
  4. Step 4: Simplify right side
    3,521.80x = 9,871,905.89
  5. Step 5: Solve for x
    x = 9,871,905.89/3,521.80
  6. Step 6: Final answer
    x = 2,803.09

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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.