Home / 2,990.16-4,485.45-1,140.96

Finding the Fourth Proportional to 2,990.16, 4,485.45 and 1,140.96

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Solution

The fourth proportional to 2,990.16, 4,485.45 and 1,140.96 is: 1,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.16 : 4,485.45 = 1,140.96 : x
  2. Step 2: Convert to fraction form
    2,990.16/4,485.45 = 1,140.96/x
  3. Step 3: Cross multiply
    2,990.16x = 4,485.45 × 1,140.96
  4. Step 4: Simplify right side
    2,990.16x = 5,117,719.03
  5. Step 5: Solve for x
    x = 5,117,719.03/2,990.16
  6. Step 6: Final answer
    x = 1,711.52

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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.