Home / 3,071.95-4,239.12-1,812.71

Finding the Fourth Proportional to 3,071.95, 4,239.12 and 1,812.71

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Solution

The fourth proportional to 3,071.95, 4,239.12 and 1,812.71 is: 2,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.95 : 4,239.12 = 1,812.71 : x
  2. Step 2: Convert to fraction form
    3,071.95/4,239.12 = 1,812.71/x
  3. Step 3: Cross multiply
    3,071.95x = 4,239.12 × 1,812.71
  4. Step 4: Simplify right side
    3,071.95x = 7,684,305.81
  5. Step 5: Solve for x
    x = 7,684,305.81/3,071.95
  6. Step 6: Final answer
    x = 2,501.44

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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.