Home / 3,117.78-4,302.36-1,860.26

Finding the Fourth Proportional to 3,117.78, 4,302.36 and 1,860.26

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Solution

The fourth proportional to 3,117.78, 4,302.36 and 1,860.26 is: 2,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.78 : 4,302.36 = 1,860.26 : x
  2. Step 2: Convert to fraction form
    3,117.78/4,302.36 = 1,860.26/x
  3. Step 3: Cross multiply
    3,117.78x = 4,302.36 × 1,860.26
  4. Step 4: Simplify right side
    3,117.78x = 8,003,486.70
  5. Step 5: Solve for x
    x = 8,003,486.70/3,117.78
  6. Step 6: Final answer
    x = 2,567.05

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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.