Home / 2,912.08-4,368.96-1,680.36

Finding the Fourth Proportional to 2,912.08, 4,368.96 and 1,680.36

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Solution

The fourth proportional to 2,912.08, 4,368.96 and 1,680.36 is: 2,521.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.08 : 4,368.96 = 1,680.36 : x
  2. Step 2: Convert to fraction form
    2,912.08/4,368.96 = 1,680.36/x
  3. Step 3: Cross multiply
    2,912.08x = 4,368.96 × 1,680.36
  4. Step 4: Simplify right side
    2,912.08x = 7,341,425.63
  5. Step 5: Solve for x
    x = 7,341,425.63/2,912.08
  6. Step 6: Final answer
    x = 2,521.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.