Home / 7,921.94-10,931.87-4,385.07

Finding the Fourth Proportional to 7,921.94, 10,931.87 and 4,385.07

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Solution

The fourth proportional to 7,921.94, 10,931.87 and 4,385.07 is: 6,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.94 : 10,931.87 = 4,385.07 : x
  2. Step 2: Convert to fraction form
    7,921.94/10,931.87 = 4,385.07/x
  3. Step 3: Cross multiply
    7,921.94x = 10,931.87 × 4,385.07
  4. Step 4: Simplify right side
    7,921.94x = 47,937,026.14
  5. Step 5: Solve for x
    x = 47,937,026.14/7,921.94
  6. Step 6: Final answer
    x = 6,051.18

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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.