Home / 2,101.62-3,152.70-869.07

Finding the Fourth Proportional to 2,101.62, 3,152.70 and 869.07

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Solution

The fourth proportional to 2,101.62, 3,152.70 and 869.07 is: 1,303.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.62 : 3,152.70 = 869.07 : x
  2. Step 2: Convert to fraction form
    2,101.62/3,152.70 = 869.07/x
  3. Step 3: Cross multiply
    2,101.62x = 3,152.70 × 869.07
  4. Step 4: Simplify right side
    2,101.62x = 2,739,916.99
  5. Step 5: Solve for x
    x = 2,739,916.99/2,101.62
  6. Step 6: Final answer
    x = 1,303.72

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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.