Home / 7,120.28-10,680.02-1,925.76

Finding the Fourth Proportional to 7,120.28, 10,680.02 and 1,925.76

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Solution

The fourth proportional to 7,120.28, 10,680.02 and 1,925.76 is: 2,888.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.28 : 10,680.02 = 1,925.76 : x
  2. Step 2: Convert to fraction form
    7,120.28/10,680.02 = 1,925.76/x
  3. Step 3: Cross multiply
    7,120.28x = 10,680.02 × 1,925.76
  4. Step 4: Simplify right side
    7,120.28x = 20,567,155.32
  5. Step 5: Solve for x
    x = 20,567,155.32/7,120.28
  6. Step 6: Final answer
    x = 2,888.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.