Home / 7,922.28-10,931.62-4,385.40

Finding the Fourth Proportional to 7,922.28, 10,931.62 and 4,385.40

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Solution

The fourth proportional to 7,922.28, 10,931.62 and 4,385.40 is: 6,051.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.28 : 10,931.62 = 4,385.40 : x
  2. Step 2: Convert to fraction form
    7,922.28/10,931.62 = 4,385.40/x
  3. Step 3: Cross multiply
    7,922.28x = 10,931.62 × 4,385.40
  4. Step 4: Simplify right side
    7,922.28x = 47,939,526.35
  5. Step 5: Solve for x
    x = 47,939,526.35/7,922.28
  6. Step 6: Final answer
    x = 6,051.23

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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.