Home / 2,119.16-2,920.38-1,528.58

Finding the Fourth Proportional to 2,119.16, 2,920.38 and 1,528.58

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Solution

The fourth proportional to 2,119.16, 2,920.38 and 1,528.58 is: 2,106.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.16 : 2,920.38 = 1,528.58 : x
  2. Step 2: Convert to fraction form
    2,119.16/2,920.38 = 1,528.58/x
  3. Step 3: Cross multiply
    2,119.16x = 2,920.38 × 1,528.58
  4. Step 4: Simplify right side
    2,119.16x = 4,464,034.46
  5. Step 5: Solve for x
    x = 4,464,034.46/2,119.16
  6. Step 6: Final answer
    x = 2,106.51

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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.