Home / 2,156.04-2,975.40-1,316.88

Finding the Fourth Proportional to 2,156.04, 2,975.40 and 1,316.88

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Solution

The fourth proportional to 2,156.04, 2,975.40 and 1,316.88 is: 1,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.04 : 2,975.40 = 1,316.88 : x
  2. Step 2: Convert to fraction form
    2,156.04/2,975.40 = 1,316.88/x
  3. Step 3: Cross multiply
    2,156.04x = 2,975.40 × 1,316.88
  4. Step 4: Simplify right side
    2,156.04x = 3,918,244.75
  5. Step 5: Solve for x
    x = 3,918,244.75/2,156.04
  6. Step 6: Final answer
    x = 1,817.33

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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.