Home / 2,988.95-4,485.30-1,140.23

Finding the Fourth Proportional to 2,988.95, 4,485.30 and 1,140.23

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Solution

The fourth proportional to 2,988.95, 4,485.30 and 1,140.23 is: 1,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.95 : 4,485.30 = 1,140.23 : x
  2. Step 2: Convert to fraction form
    2,988.95/4,485.30 = 1,140.23/x
  3. Step 3: Cross multiply
    2,988.95x = 4,485.30 × 1,140.23
  4. Step 4: Simplify right side
    2,988.95x = 5,114,251.19
  5. Step 5: Solve for x
    x = 5,114,251.19/2,988.95
  6. Step 6: Final answer
    x = 1,711.05

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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.