Home / 7,920.75-10,931.01-4,564.08

Finding the Fourth Proportional to 7,920.75, 10,931.01 and 4,564.08

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Solution

The fourth proportional to 7,920.75, 10,931.01 and 4,564.08 is: 6,298.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.75 : 10,931.01 = 4,564.08 : x
  2. Step 2: Convert to fraction form
    7,920.75/10,931.01 = 4,564.08/x
  3. Step 3: Cross multiply
    7,920.75x = 10,931.01 × 4,564.08
  4. Step 4: Simplify right side
    7,920.75x = 49,890,004.12
  5. Step 5: Solve for x
    x = 49,890,004.12/7,920.75
  6. Step 6: Final answer
    x = 6,298.65

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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.