Home / 4,985.73-7,478.81-1,865.42

Finding the Fourth Proportional to 4,985.73, 7,478.81 and 1,865.42

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Solution

The fourth proportional to 4,985.73, 7,478.81 and 1,865.42 is: 2,798.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.73 : 7,478.81 = 1,865.42 : x
  2. Step 2: Convert to fraction form
    4,985.73/7,478.81 = 1,865.42/x
  3. Step 3: Cross multiply
    4,985.73x = 7,478.81 × 1,865.42
  4. Step 4: Simplify right side
    4,985.73x = 13,951,075.03
  5. Step 5: Solve for x
    x = 13,951,075.03/4,985.73
  6. Step 6: Final answer
    x = 2,798.20

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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.