Home / 1,990.07-2,746.29-1,106.08

Finding the Fourth Proportional to 1,990.07, 2,746.29 and 1,106.08

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Solution

The fourth proportional to 1,990.07, 2,746.29 and 1,106.08 is: 1,526.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.07 : 2,746.29 = 1,106.08 : x
  2. Step 2: Convert to fraction form
    1,990.07/2,746.29 = 1,106.08/x
  3. Step 3: Cross multiply
    1,990.07x = 2,746.29 × 1,106.08
  4. Step 4: Simplify right side
    1,990.07x = 3,037,597.18
  5. Step 5: Solve for x
    x = 3,037,597.18/1,990.07
  6. Step 6: Final answer
    x = 1,526.38

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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.