Home / 4,655.39-6,985.35-2,190.45

Finding the Fourth Proportional to 4,655.39, 6,985.35 and 2,190.45

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Solution

The fourth proportional to 4,655.39, 6,985.35 and 2,190.45 is: 3,286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,655.39 : 6,985.35 = 2,190.45 : x
  2. Step 2: Convert to fraction form
    4,655.39/6,985.35 = 2,190.45/x
  3. Step 3: Cross multiply
    4,655.39x = 6,985.35 × 2,190.45
  4. Step 4: Simplify right side
    4,655.39x = 15,301,059.91
  5. Step 5: Solve for x
    x = 15,301,059.91/4,655.39
  6. Step 6: Final answer
    x = 3,286.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.