Home / 1,556.12-2,331.42-1,386.63

Finding the Fourth Proportional to 1,556.12, 2,331.42 and 1,386.63

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Solution

The fourth proportional to 1,556.12, 2,331.42 and 1,386.63 is: 2,077.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.12 : 2,331.42 = 1,386.63 : x
  2. Step 2: Convert to fraction form
    1,556.12/2,331.42 = 1,386.63/x
  3. Step 3: Cross multiply
    1,556.12x = 2,331.42 × 1,386.63
  4. Step 4: Simplify right side
    1,556.12x = 3,232,816.91
  5. Step 5: Solve for x
    x = 3,232,816.91/1,556.12
  6. Step 6: Final answer
    x = 2,077.49

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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.