Home / 7,320.64-10,927.68-6,779.20

Finding the Fourth Proportional to 7,320.64, 10,927.68 and 6,779.20

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Solution

The fourth proportional to 7,320.64, 10,927.68 and 6,779.20 is: 10,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.64 : 10,927.68 = 6,779.20 : x
  2. Step 2: Convert to fraction form
    7,320.64/10,927.68 = 6,779.20/x
  3. Step 3: Cross multiply
    7,320.64x = 10,927.68 × 6,779.20
  4. Step 4: Simplify right side
    7,320.64x = 74,080,928.26
  5. Step 5: Solve for x
    x = 74,080,928.26/7,320.64
  6. Step 6: Final answer
    x = 10,119.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.