Home / 3,117.39-4,302.08-1,858.55

Finding the Fourth Proportional to 3,117.39, 4,302.08 and 1,858.55

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Solution

The fourth proportional to 3,117.39, 4,302.08 and 1,858.55 is: 2,564.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.39 : 4,302.08 = 1,858.55 : x
  2. Step 2: Convert to fraction form
    3,117.39/4,302.08 = 1,858.55/x
  3. Step 3: Cross multiply
    3,117.39x = 4,302.08 × 1,858.55
  4. Step 4: Simplify right side
    3,117.39x = 7,995,609.27
  5. Step 5: Solve for x
    x = 7,995,609.27/3,117.39
  6. Step 6: Final answer
    x = 2,564.84

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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.