Home / 5,643.60-8,465.40-4,185.60

Finding the Fourth Proportional to 5,643.60, 8,465.40 and 4,185.60

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Solution

The fourth proportional to 5,643.60, 8,465.40 and 4,185.60 is: 6,278.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.60 : 8,465.40 = 4,185.60 : x
  2. Step 2: Convert to fraction form
    5,643.60/8,465.40 = 4,185.60/x
  3. Step 3: Cross multiply
    5,643.60x = 8,465.40 × 4,185.60
  4. Step 4: Simplify right side
    5,643.60x = 35,432,778.24
  5. Step 5: Solve for x
    x = 35,432,778.24/5,643.60
  6. Step 6: Final answer
    x = 6,278.40

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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.