Home / 2,120.76-2,923.47-1,489.32

Finding the Fourth Proportional to 2,120.76, 2,923.47 and 1,489.32

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Solution

The fourth proportional to 2,120.76, 2,923.47 and 1,489.32 is: 2,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.76 : 2,923.47 = 1,489.32 : x
  2. Step 2: Convert to fraction form
    2,120.76/2,923.47 = 1,489.32/x
  3. Step 3: Cross multiply
    2,120.76x = 2,923.47 × 1,489.32
  4. Step 4: Simplify right side
    2,120.76x = 4,353,982.34
  5. Step 5: Solve for x
    x = 4,353,982.34/2,120.76
  6. Step 6: Final answer
    x = 2,053.03

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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.