Home / 7,121.10-9,828.08-5,349.63

Finding the Fourth Proportional to 7,121.10, 9,828.08 and 5,349.63

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Solution

The fourth proportional to 7,121.10, 9,828.08 and 5,349.63 is: 7,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.10 : 9,828.08 = 5,349.63 : x
  2. Step 2: Convert to fraction form
    7,121.10/9,828.08 = 5,349.63/x
  3. Step 3: Cross multiply
    7,121.10x = 9,828.08 × 5,349.63
  4. Step 4: Simplify right side
    7,121.10x = 52,576,564.86
  5. Step 5: Solve for x
    x = 52,576,564.86/7,121.10
  6. Step 6: Final answer
    x = 7,383.21

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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.