Home / 7,485.36-10,329.87-4,128.31

Finding the Fourth Proportional to 7,485.36, 10,329.87 and 4,128.31

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Solution

The fourth proportional to 7,485.36, 10,329.87 and 4,128.31 is: 5,697.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.36 : 10,329.87 = 4,128.31 : x
  2. Step 2: Convert to fraction form
    7,485.36/10,329.87 = 4,128.31/x
  3. Step 3: Cross multiply
    7,485.36x = 10,329.87 × 4,128.31
  4. Step 4: Simplify right side
    7,485.36x = 42,644,905.62
  5. Step 5: Solve for x
    x = 42,644,905.62/7,485.36
  6. Step 6: Final answer
    x = 5,697.11

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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.