Home / 1,990.04-2,746.23-1,105.81

Finding the Fourth Proportional to 1,990.04, 2,746.23 and 1,105.81

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Solution

The fourth proportional to 1,990.04, 2,746.23 and 1,105.81 is: 1,526.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.04 : 2,746.23 = 1,105.81 : x
  2. Step 2: Convert to fraction form
    1,990.04/2,746.23 = 1,105.81/x
  3. Step 3: Cross multiply
    1,990.04x = 2,746.23 × 1,105.81
  4. Step 4: Simplify right side
    1,990.04x = 3,036,794.87
  5. Step 5: Solve for x
    x = 3,036,794.87/1,990.04
  6. Step 6: Final answer
    x = 1,526.00

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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.