Home / 1,555.62-2,330.68-1,386.12

Finding the Fourth Proportional to 1,555.62, 2,330.68 and 1,386.12

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Solution

The fourth proportional to 1,555.62, 2,330.68 and 1,386.12 is: 2,076.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.62 : 2,330.68 = 1,386.12 : x
  2. Step 2: Convert to fraction form
    1,555.62/2,330.68 = 1,386.12/x
  3. Step 3: Cross multiply
    1,555.62x = 2,330.68 × 1,386.12
  4. Step 4: Simplify right side
    1,555.62x = 3,230,602.16
  5. Step 5: Solve for x
    x = 3,230,602.16/1,555.62
  6. Step 6: Final answer
    x = 2,076.73

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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.