Home / 7,538.61-10,403.84-4,181.40

Finding the Fourth Proportional to 7,538.61, 10,403.84 and 4,181.40

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Solution

The fourth proportional to 7,538.61, 10,403.84 and 4,181.40 is: 5,770.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.61 : 10,403.84 = 4,181.40 : x
  2. Step 2: Convert to fraction form
    7,538.61/10,403.84 = 4,181.40/x
  3. Step 3: Cross multiply
    7,538.61x = 10,403.84 × 4,181.40
  4. Step 4: Simplify right side
    7,538.61x = 43,502,627.03
  5. Step 5: Solve for x
    x = 43,502,627.03/7,538.61
  6. Step 6: Final answer
    x = 5,770.64

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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.