Home / 3,386.35-4,674.86-2,129.23

Finding the Fourth Proportional to 3,386.35, 4,674.86 and 2,129.23

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Solution

The fourth proportional to 3,386.35, 4,674.86 and 2,129.23 is: 2,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.35 : 4,674.86 = 2,129.23 : x
  2. Step 2: Convert to fraction form
    3,386.35/4,674.86 = 2,129.23/x
  3. Step 3: Cross multiply
    3,386.35x = 4,674.86 × 2,129.23
  4. Step 4: Simplify right side
    3,386.35x = 9,953,852.16
  5. Step 5: Solve for x
    x = 9,953,852.16/3,386.35
  6. Step 6: Final answer
    x = 2,939.40

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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.