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Finding the Fourth Proportional to 7,319.04, 10,978.54 and 5,655.58

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Solution

The fourth proportional to 7,319.04, 10,978.54 and 5,655.58 is: 8,483.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.04 : 10,978.54 = 5,655.58 : x
  2. Step 2: Convert to fraction form
    7,319.04/10,978.54 = 5,655.58/x
  3. Step 3: Cross multiply
    7,319.04x = 10,978.54 × 5,655.58
  4. Step 4: Simplify right side
    7,319.04x = 62,089,969.67
  5. Step 5: Solve for x
    x = 62,089,969.67/7,319.04
  6. Step 6: Final answer
    x = 8,483.35

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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.