Home / 5,639.42-8,420.56-4,587.54

Finding the Fourth Proportional to 5,639.42, 8,420.56 and 4,587.54

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Solution

The fourth proportional to 5,639.42, 8,420.56 and 4,587.54 is: 6,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.42 : 8,420.56 = 4,587.54 : x
  2. Step 2: Convert to fraction form
    5,639.42/8,420.56 = 4,587.54/x
  3. Step 3: Cross multiply
    5,639.42x = 8,420.56 × 4,587.54
  4. Step 4: Simplify right side
    5,639.42x = 38,629,612.78
  5. Step 5: Solve for x
    x = 38,629,612.78/5,639.42
  6. Step 6: Final answer
    x = 6,849.92

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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.