Home / 3,030.28-4,545.08-839.32

Finding the Fourth Proportional to 3,030.28, 4,545.08 and 839.32

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Solution

The fourth proportional to 3,030.28, 4,545.08 and 839.32 is: 1,258.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.28 : 4,545.08 = 839.32 : x
  2. Step 2: Convert to fraction form
    3,030.28/4,545.08 = 839.32/x
  3. Step 3: Cross multiply
    3,030.28x = 4,545.08 × 839.32
  4. Step 4: Simplify right side
    3,030.28x = 3,814,776.55
  5. Step 5: Solve for x
    x = 3,814,776.55/3,030.28
  6. Step 6: Final answer
    x = 1,258.89

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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.