Home / 7,113.24-9,816.03-4,128.60

Finding the Fourth Proportional to 7,113.24, 9,816.03 and 4,128.60

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Solution

The fourth proportional to 7,113.24, 9,816.03 and 4,128.60 is: 5,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.24 : 9,816.03 = 4,128.60 : x
  2. Step 2: Convert to fraction form
    7,113.24/9,816.03 = 4,128.60/x
  3. Step 3: Cross multiply
    7,113.24x = 9,816.03 × 4,128.60
  4. Step 4: Simplify right side
    7,113.24x = 40,526,461.46
  5. Step 5: Solve for x
    x = 40,526,461.46/7,113.24
  6. Step 6: Final answer
    x = 5,697.33

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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.