Home / 4,278.75-6,421.77-1,683.51

Finding the Fourth Proportional to 4,278.75, 6,421.77 and 1,683.51

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Solution

The fourth proportional to 4,278.75, 6,421.77 and 1,683.51 is: 2,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.75 : 6,421.77 = 1,683.51 : x
  2. Step 2: Convert to fraction form
    4,278.75/6,421.77 = 1,683.51/x
  3. Step 3: Cross multiply
    4,278.75x = 6,421.77 × 1,683.51
  4. Step 4: Simplify right side
    4,278.75x = 10,811,114.01
  5. Step 5: Solve for x
    x = 10,811,114.01/4,278.75
  6. Step 6: Final answer
    x = 2,526.70

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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.