Home / 7,074.15-9,762.60-3,887.72

Finding the Fourth Proportional to 7,074.15, 9,762.60 and 3,887.72

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Solution

The fourth proportional to 7,074.15, 9,762.60 and 3,887.72 is: 5,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.15 : 9,762.60 = 3,887.72 : x
  2. Step 2: Convert to fraction form
    7,074.15/9,762.60 = 3,887.72/x
  3. Step 3: Cross multiply
    7,074.15x = 9,762.60 × 3,887.72
  4. Step 4: Simplify right side
    7,074.15x = 37,954,206.46
  5. Step 5: Solve for x
    x = 37,954,206.46/7,074.15
  6. Step 6: Final answer
    x = 5,365.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.