Home / 5,387.51-8,081.27-1,690.06

Finding the Fourth Proportional to 5,387.51, 8,081.27 and 1,690.06

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Solution

The fourth proportional to 5,387.51, 8,081.27 and 1,690.06 is: 2,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.51 : 8,081.27 = 1,690.06 : x
  2. Step 2: Convert to fraction form
    5,387.51/8,081.27 = 1,690.06/x
  3. Step 3: Cross multiply
    5,387.51x = 8,081.27 × 1,690.06
  4. Step 4: Simplify right side
    5,387.51x = 13,657,831.18
  5. Step 5: Solve for x
    x = 13,657,831.18/5,387.51
  6. Step 6: Final answer
    x = 2,535.09

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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.