Home / 7,111.74-9,812.52-4,125.84

Finding the Fourth Proportional to 7,111.74, 9,812.52 and 4,125.84

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Solution

The fourth proportional to 7,111.74, 9,812.52 and 4,125.84 is: 5,692.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.74 : 9,812.52 = 4,125.84 : x
  2. Step 2: Convert to fraction form
    7,111.74/9,812.52 = 4,125.84/x
  3. Step 3: Cross multiply
    7,111.74x = 9,812.52 × 4,125.84
  4. Step 4: Simplify right side
    7,111.74x = 40,484,887.52
  5. Step 5: Solve for x
    x = 40,484,887.52/7,111.74
  6. Step 6: Final answer
    x = 5,692.68

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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.