Home / 3,315.60-4,575.42-1,918.26

Finding the Fourth Proportional to 3,315.60, 4,575.42 and 1,918.26

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Solution

The fourth proportional to 3,315.60, 4,575.42 and 1,918.26 is: 2,647.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.60 : 4,575.42 = 1,918.26 : x
  2. Step 2: Convert to fraction form
    3,315.60/4,575.42 = 1,918.26/x
  3. Step 3: Cross multiply
    3,315.60x = 4,575.42 × 1,918.26
  4. Step 4: Simplify right side
    3,315.60x = 8,776,845.17
  5. Step 5: Solve for x
    x = 8,776,845.17/3,315.60
  6. Step 6: Final answer
    x = 2,647.14

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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.