Home / 4,820.08-6,646.47-3,138.40

Finding the Fourth Proportional to 4,820.08, 6,646.47 and 3,138.40

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Solution

The fourth proportional to 4,820.08, 6,646.47 and 3,138.40 is: 4,327.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,820.08 : 6,646.47 = 3,138.40 : x
  2. Step 2: Convert to fraction form
    4,820.08/6,646.47 = 3,138.40/x
  3. Step 3: Cross multiply
    4,820.08x = 6,646.47 × 3,138.40
  4. Step 4: Simplify right side
    4,820.08x = 20,859,281.45
  5. Step 5: Solve for x
    x = 20,859,281.45/4,820.08
  6. Step 6: Final answer
    x = 4,327.58

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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.