Home / 7,911.40-10,913.06-4,927.72

Finding the Fourth Proportional to 7,911.40, 10,913.06 and 4,927.72

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Solution

The fourth proportional to 7,911.40, 10,913.06 and 4,927.72 is: 6,797.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.40 : 10,913.06 = 4,927.72 : x
  2. Step 2: Convert to fraction form
    7,911.40/10,913.06 = 4,927.72/x
  3. Step 3: Cross multiply
    7,911.40x = 10,913.06 × 4,927.72
  4. Step 4: Simplify right side
    7,911.40x = 53,776,504.02
  5. Step 5: Solve for x
    x = 53,776,504.02/7,911.40
  6. Step 6: Final answer
    x = 6,797.34

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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.