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Finding the Fourth Proportional to 6,602.58, 9,111.42 and 3,618.40

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Solution

The fourth proportional to 6,602.58, 9,111.42 and 3,618.40 is: 4,993.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,602.58 : 9,111.42 = 3,618.40 : x
  2. Step 2: Convert to fraction form
    6,602.58/9,111.42 = 3,618.40/x
  3. Step 3: Cross multiply
    6,602.58x = 9,111.42 × 3,618.40
  4. Step 4: Simplify right side
    6,602.58x = 32,968,762.13
  5. Step 5: Solve for x
    x = 32,968,762.13/6,602.58
  6. Step 6: Final answer
    x = 4,993.32

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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.