Home / 2,719.14-4,080.53-987.77

Finding the Fourth Proportional to 2,719.14, 4,080.53 and 987.77

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Solution

The fourth proportional to 2,719.14, 4,080.53 and 987.77 is: 1,482.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.14 : 4,080.53 = 987.77 : x
  2. Step 2: Convert to fraction form
    2,719.14/4,080.53 = 987.77/x
  3. Step 3: Cross multiply
    2,719.14x = 4,080.53 × 987.77
  4. Step 4: Simplify right side
    2,719.14x = 4,030,604.72
  5. Step 5: Solve for x
    x = 4,030,604.72/2,719.14
  6. Step 6: Final answer
    x = 1,482.31

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1.5x scale

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.