Home / 7,920.72-10,931.16-4,734.12

Finding the Fourth Proportional to 7,920.72, 10,931.16 and 4,734.12

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Solution

The fourth proportional to 7,920.72, 10,931.16 and 4,734.12 is: 6,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.72 : 10,931.16 = 4,734.12 : x
  2. Step 2: Convert to fraction form
    7,920.72/10,931.16 = 4,734.12/x
  3. Step 3: Cross multiply
    7,920.72x = 10,931.16 × 4,734.12
  4. Step 4: Simplify right side
    7,920.72x = 51,749,423.18
  5. Step 5: Solve for x
    x = 51,749,423.18/7,920.72
  6. Step 6: Final answer
    x = 6,533.42

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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.