Home / 2,875.56-4,307.69-1,985.96

Finding the Fourth Proportional to 2,875.56, 4,307.69 and 1,985.96

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Solution

The fourth proportional to 2,875.56, 4,307.69 and 1,985.96 is: 2,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.56 : 4,307.69 = 1,985.96 : x
  2. Step 2: Convert to fraction form
    2,875.56/4,307.69 = 1,985.96/x
  3. Step 3: Cross multiply
    2,875.56x = 4,307.69 × 1,985.96
  4. Step 4: Simplify right side
    2,875.56x = 8,554,900.03
  5. Step 5: Solve for x
    x = 8,554,900.03/2,875.56
  6. Step 6: Final answer
    x = 2,975.04

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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.