Home / 1,864.16-2,571.36-1,421.12

Finding the Fourth Proportional to 1,864.16, 2,571.36 and 1,421.12

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Solution

The fourth proportional to 1,864.16, 2,571.36 and 1,421.12 is: 1,960.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.16 : 2,571.36 = 1,421.12 : x
  2. Step 2: Convert to fraction form
    1,864.16/2,571.36 = 1,421.12/x
  3. Step 3: Cross multiply
    1,864.16x = 2,571.36 × 1,421.12
  4. Step 4: Simplify right side
    1,864.16x = 3,654,211.12
  5. Step 5: Solve for x
    x = 3,654,211.12/1,864.16
  6. Step 6: Final answer
    x = 1,960.25

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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.