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Finding the Fourth Proportional to 2,754.80, 4,113.70 and 2,390.48

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Solution

The fourth proportional to 2,754.80, 4,113.70 and 2,390.48 is: 3,569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.80 : 4,113.70 = 2,390.48 : x
  2. Step 2: Convert to fraction form
    2,754.80/4,113.70 = 2,390.48/x
  3. Step 3: Cross multiply
    2,754.80x = 4,113.70 × 2,390.48
  4. Step 4: Simplify right side
    2,754.80x = 9,833,717.58
  5. Step 5: Solve for x
    x = 9,833,717.58/2,754.80
  6. Step 6: Final answer
    x = 3,569.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.