Home / 3,071.42-4,240-1,812.08

Finding the Fourth Proportional to 3,071.42, 4,240 and 1,812.08

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Solution

The fourth proportional to 3,071.42, 4,240 and 1,812.08 is: 2,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.42 : 4,240 = 1,812.08 : x
  2. Step 2: Convert to fraction form
    3,071.42/4,240 = 1,812.08/x
  3. Step 3: Cross multiply
    3,071.42x = 4,240 × 1,812.08
  4. Step 4: Simplify right side
    3,071.42x = 7,683,219.20
  5. Step 5: Solve for x
    x = 7,683,219.20/3,071.42
  6. Step 6: Final answer
    x = 2,501.52

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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.