Home / 3,071.19-4,607.55-1,428.90

Finding the Fourth Proportional to 3,071.19, 4,607.55 and 1,428.90

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Solution

The fourth proportional to 3,071.19, 4,607.55 and 1,428.90 is: 2,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.19 : 4,607.55 = 1,428.90 : x
  2. Step 2: Convert to fraction form
    3,071.19/4,607.55 = 1,428.90/x
  3. Step 3: Cross multiply
    3,071.19x = 4,607.55 × 1,428.90
  4. Step 4: Simplify right side
    3,071.19x = 6,583,728.20
  5. Step 5: Solve for x
    x = 6,583,728.20/3,071.19
  6. Step 6: Final answer
    x = 2,143.71

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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.