Home / 2,918.95-4,033.40-2,219.11

Finding the Fourth Proportional to 2,918.95, 4,033.40 and 2,219.11

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Solution

The fourth proportional to 2,918.95, 4,033.40 and 2,219.11 is: 3,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.95 : 4,033.40 = 2,219.11 : x
  2. Step 2: Convert to fraction form
    2,918.95/4,033.40 = 2,219.11/x
  3. Step 3: Cross multiply
    2,918.95x = 4,033.40 × 2,219.11
  4. Step 4: Simplify right side
    2,918.95x = 8,950,547.18
  5. Step 5: Solve for x
    x = 8,950,547.18/2,918.95
  6. Step 6: Final answer
    x = 3,066.36

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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.