Home / 1,990.34-2,746.64-1,106.12

Finding the Fourth Proportional to 1,990.34, 2,746.64 and 1,106.12

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Solution

The fourth proportional to 1,990.34, 2,746.64 and 1,106.12 is: 1,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.34 : 2,746.64 = 1,106.12 : x
  2. Step 2: Convert to fraction form
    1,990.34/2,746.64 = 1,106.12/x
  3. Step 3: Cross multiply
    1,990.34x = 2,746.64 × 1,106.12
  4. Step 4: Simplify right side
    1,990.34x = 3,038,123.07
  5. Step 5: Solve for x
    x = 3,038,123.07/1,990.34
  6. Step 6: Final answer
    x = 1,526.44

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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.