Home / 9,089.54-12,539.36-5,312.87

Finding the Fourth Proportional to 9,089.54, 12,539.36 and 5,312.87

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Solution

The fourth proportional to 9,089.54, 12,539.36 and 5,312.87 is: 7,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,089.54 : 12,539.36 = 5,312.87 : x
  2. Step 2: Convert to fraction form
    9,089.54/12,539.36 = 5,312.87/x
  3. Step 3: Cross multiply
    9,089.54x = 12,539.36 × 5,312.87
  4. Step 4: Simplify right side
    9,089.54x = 66,619,989.56
  5. Step 5: Solve for x
    x = 66,619,989.56/9,089.54
  6. Step 6: Final answer
    x = 7,329.30

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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.