Home / 2,459.16-3,390.66-2,143.28

Finding the Fourth Proportional to 2,459.16, 3,390.66 and 2,143.28

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Solution

The fourth proportional to 2,459.16, 3,390.66 and 2,143.28 is: 2,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,459.16 : 3,390.66 = 2,143.28 : x
  2. Step 2: Convert to fraction form
    2,459.16/3,390.66 = 2,143.28/x
  3. Step 3: Cross multiply
    2,459.16x = 3,390.66 × 2,143.28
  4. Step 4: Simplify right side
    2,459.16x = 7,267,133.76
  5. Step 5: Solve for x
    x = 7,267,133.76/2,459.16
  6. Step 6: Final answer
    x = 2,955.13

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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.