Home / 2,155.16-2,974.36-1,259.08

Finding the Fourth Proportional to 2,155.16, 2,974.36 and 1,259.08

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Solution

The fourth proportional to 2,155.16, 2,974.36 and 1,259.08 is: 1,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.16 : 2,974.36 = 1,259.08 : x
  2. Step 2: Convert to fraction form
    2,155.16/2,974.36 = 1,259.08/x
  3. Step 3: Cross multiply
    2,155.16x = 2,974.36 × 1,259.08
  4. Step 4: Simplify right side
    2,155.16x = 3,744,957.19
  5. Step 5: Solve for x
    x = 3,744,957.19/2,155.16
  6. Step 6: Final answer
    x = 1,737.67

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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.