Home / 4,220-6,330.36-1,142

Finding the Fourth Proportional to 4,220, 6,330.36 and 1,142

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Solution

The fourth proportional to 4,220, 6,330.36 and 1,142 is: 1,713.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220 : 6,330.36 = 1,142 : x
  2. Step 2: Convert to fraction form
    4,220/6,330.36 = 1,142/x
  3. Step 3: Cross multiply
    4,220x = 6,330.36 × 1,142
  4. Step 4: Simplify right side
    4,220x = 7,229,271.12
  5. Step 5: Solve for x
    x = 7,229,271.12/4,220
  6. Step 6: Final answer
    x = 1,713.10

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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.