Home / 1,985.58-2,975.94-1,011.15

Finding the Fourth Proportional to 1,985.58, 2,975.94 and 1,011.15

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Solution

The fourth proportional to 1,985.58, 2,975.94 and 1,011.15 is: 1,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.58 : 2,975.94 = 1,011.15 : x
  2. Step 2: Convert to fraction form
    1,985.58/2,975.94 = 1,011.15/x
  3. Step 3: Cross multiply
    1,985.58x = 2,975.94 × 1,011.15
  4. Step 4: Simplify right side
    1,985.58x = 3,009,121.73
  5. Step 5: Solve for x
    x = 3,009,121.73/1,985.58
  6. Step 6: Final answer
    x = 1,515.49

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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.