Home / 4,880.25-7,312.14-3,420.63

Finding the Fourth Proportional to 4,880.25, 7,312.14 and 3,420.63

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Solution

The fourth proportional to 4,880.25, 7,312.14 and 3,420.63 is: 5,125.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.25 : 7,312.14 = 3,420.63 : x
  2. Step 2: Convert to fraction form
    4,880.25/7,312.14 = 3,420.63/x
  3. Step 3: Cross multiply
    4,880.25x = 7,312.14 × 3,420.63
  4. Step 4: Simplify right side
    4,880.25x = 25,012,125.45
  5. Step 5: Solve for x
    x = 25,012,125.45/4,880.25
  6. Step 6: Final answer
    x = 5,125.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.