Home / 2,430.72-3,358.94-1,988.46

Finding the Fourth Proportional to 2,430.72, 3,358.94 and 1,988.46

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Solution

The fourth proportional to 2,430.72, 3,358.94 and 1,988.46 is: 2,747.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.72 : 3,358.94 = 1,988.46 : x
  2. Step 2: Convert to fraction form
    2,430.72/3,358.94 = 1,988.46/x
  3. Step 3: Cross multiply
    2,430.72x = 3,358.94 × 1,988.46
  4. Step 4: Simplify right side
    2,430.72x = 6,679,107.89
  5. Step 5: Solve for x
    x = 6,679,107.89/2,430.72
  6. Step 6: Final answer
    x = 2,747.79

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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.