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Finding the Fourth Proportional to 4,707.18, 6,485.94 and 3,865.05

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Solution

The fourth proportional to 4,707.18, 6,485.94 and 3,865.05 is: 5,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,707.18 : 6,485.94 = 3,865.05 : x
  2. Step 2: Convert to fraction form
    4,707.18/6,485.94 = 3,865.05/x
  3. Step 3: Cross multiply
    4,707.18x = 6,485.94 × 3,865.05
  4. Step 4: Simplify right side
    4,707.18x = 25,068,482.40
  5. Step 5: Solve for x
    x = 25,068,482.40/4,707.18
  6. Step 6: Final answer
    x = 5,325.58

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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.