Home / 5,628.10-8,440.67-1,678.42

Finding the Fourth Proportional to 5,628.10, 8,440.67 and 1,678.42

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Solution

The fourth proportional to 5,628.10, 8,440.67 and 1,678.42 is: 2,517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.10 : 8,440.67 = 1,678.42 : x
  2. Step 2: Convert to fraction form
    5,628.10/8,440.67 = 1,678.42/x
  3. Step 3: Cross multiply
    5,628.10x = 8,440.67 × 1,678.42
  4. Step 4: Simplify right side
    5,628.10x = 14,166,980.95
  5. Step 5: Solve for x
    x = 14,166,980.95/5,628.10
  6. Step 6: Final answer
    x = 2,517.19

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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.