Home / 5,628.79-8,438.55-4,239.46

Finding the Fourth Proportional to 5,628.79, 8,438.55 and 4,239.46

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Solution

The fourth proportional to 5,628.79, 8,438.55 and 4,239.46 is: 6,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.79 : 8,438.55 = 4,239.46 : x
  2. Step 2: Convert to fraction form
    5,628.79/8,438.55 = 4,239.46/x
  3. Step 3: Cross multiply
    5,628.79x = 8,438.55 × 4,239.46
  4. Step 4: Simplify right side
    5,628.79x = 35,774,895.18
  5. Step 5: Solve for x
    x = 35,774,895.18/5,628.79
  6. Step 6: Final answer
    x = 6,355.70

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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.