Home / 3,378.51-4,661.81-1,886.35

Finding the Fourth Proportional to 3,378.51, 4,661.81 and 1,886.35

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Solution

The fourth proportional to 3,378.51, 4,661.81 and 1,886.35 is: 2,602.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.51 : 4,661.81 = 1,886.35 : x
  2. Step 2: Convert to fraction form
    3,378.51/4,661.81 = 1,886.35/x
  3. Step 3: Cross multiply
    3,378.51x = 4,661.81 × 1,886.35
  4. Step 4: Simplify right side
    3,378.51x = 8,793,795.86
  5. Step 5: Solve for x
    x = 8,793,795.86/3,378.51
  6. Step 6: Final answer
    x = 2,602.87

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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.