Home / 1,533.05-2,112.58-1,089.71

Finding the Fourth Proportional to 1,533.05, 2,112.58 and 1,089.71

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Solution

The fourth proportional to 1,533.05, 2,112.58 and 1,089.71 is: 1,501.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.05 : 2,112.58 = 1,089.71 : x
  2. Step 2: Convert to fraction form
    1,533.05/2,112.58 = 1,089.71/x
  3. Step 3: Cross multiply
    1,533.05x = 2,112.58 × 1,089.71
  4. Step 4: Simplify right side
    1,533.05x = 2,302,099.55
  5. Step 5: Solve for x
    x = 2,302,099.55/1,533.05
  6. Step 6: Final answer
    x = 1,501.65

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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.