Home / 3,017.39-4,159.64-2,118.40

Finding the Fourth Proportional to 3,017.39, 4,159.64 and 2,118.40

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Solution

The fourth proportional to 3,017.39, 4,159.64 and 2,118.40 is: 2,920.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,017.39 : 4,159.64 = 2,118.40 : x
  2. Step 2: Convert to fraction form
    3,017.39/4,159.64 = 2,118.40/x
  3. Step 3: Cross multiply
    3,017.39x = 4,159.64 × 2,118.40
  4. Step 4: Simplify right side
    3,017.39x = 8,811,749.99
  5. Step 5: Solve for x
    x = 8,811,749.99/3,017.39
  6. Step 6: Final answer
    x = 2,920.32

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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.