Home / 4,280.88-6,421.32-1,683.75

Finding the Fourth Proportional to 4,280.88, 6,421.32 and 1,683.75

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Solution

The fourth proportional to 4,280.88, 6,421.32 and 1,683.75 is: 2,525.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.88 : 6,421.32 = 1,683.75 : x
  2. Step 2: Convert to fraction form
    4,280.88/6,421.32 = 1,683.75/x
  3. Step 3: Cross multiply
    4,280.88x = 6,421.32 × 1,683.75
  4. Step 4: Simplify right side
    4,280.88x = 10,811,897.55
  5. Step 5: Solve for x
    x = 10,811,897.55/4,280.88
  6. Step 6: Final answer
    x = 2,525.63

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Double scale
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Similar ratio
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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.