Home / 4,657.20-6,420.28-3,330.40

Finding the Fourth Proportional to 4,657.20, 6,420.28 and 3,330.40

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Solution

The fourth proportional to 4,657.20, 6,420.28 and 3,330.40 is: 4,591.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,657.20 : 6,420.28 = 3,330.40 : x
  2. Step 2: Convert to fraction form
    4,657.20/6,420.28 = 3,330.40/x
  3. Step 3: Cross multiply
    4,657.20x = 6,420.28 × 3,330.40
  4. Step 4: Simplify right side
    4,657.20x = 21,382,100.51
  5. Step 5: Solve for x
    x = 21,382,100.51/4,657.20
  6. Step 6: Final answer
    x = 4,591.19

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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.