Home / 3,030.96-4,545.64-839.12

Finding the Fourth Proportional to 3,030.96, 4,545.64 and 839.12

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Solution

The fourth proportional to 3,030.96, 4,545.64 and 839.12 is: 1,258.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.96 : 4,545.64 = 839.12 : x
  2. Step 2: Convert to fraction form
    3,030.96/4,545.64 = 839.12/x
  3. Step 3: Cross multiply
    3,030.96x = 4,545.64 × 839.12
  4. Step 4: Simplify right side
    3,030.96x = 3,814,337.44
  5. Step 5: Solve for x
    x = 3,814,337.44/3,030.96
  6. Step 6: Final answer
    x = 1,258.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.