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Finding the Fourth Proportional to 7,242.36, 9,985.95 and 4,720.92

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Solution

The fourth proportional to 7,242.36, 9,985.95 and 4,720.92 is: 6,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.36 : 9,985.95 = 4,720.92 : x
  2. Step 2: Convert to fraction form
    7,242.36/9,985.95 = 4,720.92/x
  3. Step 3: Cross multiply
    7,242.36x = 9,985.95 × 4,720.92
  4. Step 4: Simplify right side
    7,242.36x = 47,142,871.07
  5. Step 5: Solve for x
    x = 47,142,871.07/7,242.36
  6. Step 6: Final answer
    x = 6,509.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.