Home / 7,485.08-10,329.28-4,128.21

Finding the Fourth Proportional to 7,485.08, 10,329.28 and 4,128.21

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Solution

The fourth proportional to 7,485.08, 10,329.28 and 4,128.21 is: 5,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.08 : 10,329.28 = 4,128.21 : x
  2. Step 2: Convert to fraction form
    7,485.08/10,329.28 = 4,128.21/x
  3. Step 3: Cross multiply
    7,485.08x = 10,329.28 × 4,128.21
  4. Step 4: Simplify right side
    7,485.08x = 42,641,387.93
  5. Step 5: Solve for x
    x = 42,641,387.93/7,485.08
  6. Step 6: Final answer
    x = 5,696.85

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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.