Home / 2,051.50-2,831.08-1,120.06

Finding the Fourth Proportional to 2,051.50, 2,831.08 and 1,120.06

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Solution

The fourth proportional to 2,051.50, 2,831.08 and 1,120.06 is: 1,545.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.50 : 2,831.08 = 1,120.06 : x
  2. Step 2: Convert to fraction form
    2,051.50/2,831.08 = 1,120.06/x
  3. Step 3: Cross multiply
    2,051.50x = 2,831.08 × 1,120.06
  4. Step 4: Simplify right side
    2,051.50x = 3,170,979.46
  5. Step 5: Solve for x
    x = 3,170,979.46/2,051.50
  6. Step 6: Final answer
    x = 1,545.69

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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.