Home / 9,322.40-12,864.96-5,130.56

Finding the Fourth Proportional to 9,322.40, 12,864.96 and 5,130.56

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Solution

The fourth proportional to 9,322.40, 12,864.96 and 5,130.56 is: 7,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,322.40 : 12,864.96 = 5,130.56 : x
  2. Step 2: Convert to fraction form
    9,322.40/12,864.96 = 5,130.56/x
  3. Step 3: Cross multiply
    9,322.40x = 12,864.96 × 5,130.56
  4. Step 4: Simplify right side
    9,322.40x = 66,004,449.18
  5. Step 5: Solve for x
    x = 66,004,449.18/9,322.40
  6. Step 6: Final answer
    x = 7,080.20

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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.