Home / 9,415.76-12,993.64-5,166.85

Finding the Fourth Proportional to 9,415.76, 12,993.64 and 5,166.85

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Solution

The fourth proportional to 9,415.76, 12,993.64 and 5,166.85 is: 7,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.76 : 12,993.64 = 5,166.85 : x
  2. Step 2: Convert to fraction form
    9,415.76/12,993.64 = 5,166.85/x
  3. Step 3: Cross multiply
    9,415.76x = 12,993.64 × 5,166.85
  4. Step 4: Simplify right side
    9,415.76x = 67,136,200.60
  5. Step 5: Solve for x
    x = 67,136,200.60/9,415.76
  6. Step 6: Final answer
    x = 7,130.20

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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.