Home / 2,912.08-4,017.40-1,916.08

Finding the Fourth Proportional to 2,912.08, 4,017.40 and 1,916.08

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Solution

The fourth proportional to 2,912.08, 4,017.40 and 1,916.08 is: 2,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.08 : 4,017.40 = 1,916.08 : x
  2. Step 2: Convert to fraction form
    2,912.08/4,017.40 = 1,916.08/x
  3. Step 3: Cross multiply
    2,912.08x = 4,017.40 × 1,916.08
  4. Step 4: Simplify right side
    2,912.08x = 7,697,659.79
  5. Step 5: Solve for x
    x = 7,697,659.79/2,912.08
  6. Step 6: Final answer
    x = 2,643.35

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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.