Home / 5,440.40-8,148.45-2,840.30

Finding the Fourth Proportional to 5,440.40, 8,148.45 and 2,840.30

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Solution

The fourth proportional to 5,440.40, 8,148.45 and 2,840.30 is: 4,254.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.40 : 8,148.45 = 2,840.30 : x
  2. Step 2: Convert to fraction form
    5,440.40/8,148.45 = 2,840.30/x
  3. Step 3: Cross multiply
    5,440.40x = 8,148.45 × 2,840.30
  4. Step 4: Simplify right side
    5,440.40x = 23,144,042.54
  5. Step 5: Solve for x
    x = 23,144,042.54/5,440.40
  6. Step 6: Final answer
    x = 4,254.11

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1.5x scale

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.