Home / 3,312.95-4,570.56-1,986.78

Finding the Fourth Proportional to 3,312.95, 4,570.56 and 1,986.78

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Solution

The fourth proportional to 3,312.95, 4,570.56 and 1,986.78 is: 2,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.95 : 4,570.56 = 1,986.78 : x
  2. Step 2: Convert to fraction form
    3,312.95/4,570.56 = 1,986.78/x
  3. Step 3: Cross multiply
    3,312.95x = 4,570.56 × 1,986.78
  4. Step 4: Simplify right side
    3,312.95x = 9,080,697.20
  5. Step 5: Solve for x
    x = 9,080,697.20/3,312.95
  6. Step 6: Final answer
    x = 2,740.97

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1.5x scale

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.