Home / 9,261.12-12,779.70-5,282.40

Finding the Fourth Proportional to 9,261.12, 12,779.70 and 5,282.40

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Solution

The fourth proportional to 9,261.12, 12,779.70 and 5,282.40 is: 7,289.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.12 : 12,779.70 = 5,282.40 : x
  2. Step 2: Convert to fraction form
    9,261.12/12,779.70 = 5,282.40/x
  3. Step 3: Cross multiply
    9,261.12x = 12,779.70 × 5,282.40
  4. Step 4: Simplify right side
    9,261.12x = 67,507,487.28
  5. Step 5: Solve for x
    x = 67,507,487.28/9,261.12
  6. Step 6: Final answer
    x = 7,289.34

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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.