Home / 9,331.02-12,870.90-5,551.56

Finding the Fourth Proportional to 9,331.02, 12,870.90 and 5,551.56

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Solution

The fourth proportional to 9,331.02, 12,870.90 and 5,551.56 is: 7,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.02 : 12,870.90 = 5,551.56 : x
  2. Step 2: Convert to fraction form
    9,331.02/12,870.90 = 5,551.56/x
  3. Step 3: Cross multiply
    9,331.02x = 12,870.90 × 5,551.56
  4. Step 4: Simplify right side
    9,331.02x = 71,453,573.60
  5. Step 5: Solve for x
    x = 71,453,573.60/9,331.02
  6. Step 6: Final answer
    x = 7,657.64

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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.