Home / 7,485.93-10,331.04-4,128.74

Finding the Fourth Proportional to 7,485.93, 10,331.04 and 4,128.74

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Solution

The fourth proportional to 7,485.93, 10,331.04 and 4,128.74 is: 5,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.93 : 10,331.04 = 4,128.74 : x
  2. Step 2: Convert to fraction form
    7,485.93/10,331.04 = 4,128.74/x
  3. Step 3: Cross multiply
    7,485.93x = 10,331.04 × 4,128.74
  4. Step 4: Simplify right side
    7,485.93x = 42,654,126.43
  5. Step 5: Solve for x
    x = 42,654,126.43/7,485.93
  6. Step 6: Final answer
    x = 5,697.91

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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.