Home / 2,961.60-4,438.80-1,316.40

Finding the Fourth Proportional to 2,961.60, 4,438.80 and 1,316.40

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Solution

The fourth proportional to 2,961.60, 4,438.80 and 1,316.40 is: 1,973.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.60 : 4,438.80 = 1,316.40 : x
  2. Step 2: Convert to fraction form
    2,961.60/4,438.80 = 1,316.40/x
  3. Step 3: Cross multiply
    2,961.60x = 4,438.80 × 1,316.40
  4. Step 4: Simplify right side
    2,961.60x = 5,843,236.32
  5. Step 5: Solve for x
    x = 5,843,236.32/2,961.60
  6. Step 6: Final answer
    x = 1,973.00

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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.