Home / 1,542.14-2,130.87-1,143.23

Finding the Fourth Proportional to 1,542.14, 2,130.87 and 1,143.23

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Solution

The fourth proportional to 1,542.14, 2,130.87 and 1,143.23 is: 1,579.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.14 : 2,130.87 = 1,143.23 : x
  2. Step 2: Convert to fraction form
    1,542.14/2,130.87 = 1,143.23/x
  3. Step 3: Cross multiply
    1,542.14x = 2,130.87 × 1,143.23
  4. Step 4: Simplify right side
    1,542.14x = 2,436,074.51
  5. Step 5: Solve for x
    x = 2,436,074.51/1,542.14
  6. Step 6: Final answer
    x = 1,579.67

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Half scale
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Double scale
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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.