Home / 1,986.86-2,980.36-526.02

Finding the Fourth Proportional to 1,986.86, 2,980.36 and 526.02

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Solution

The fourth proportional to 1,986.86, 2,980.36 and 526.02 is: 789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.86 : 2,980.36 = 526.02 : x
  2. Step 2: Convert to fraction form
    1,986.86/2,980.36 = 526.02/x
  3. Step 3: Cross multiply
    1,986.86x = 2,980.36 × 526.02
  4. Step 4: Simplify right side
    1,986.86x = 1,567,728.97
  5. Step 5: Solve for x
    x = 1,567,728.97/1,986.86
  6. Step 6: Final answer
    x = 789.05

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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.