Home / 6,986.16-10,478.52-4,381.20

Finding the Fourth Proportional to 6,986.16, 10,478.52 and 4,381.20

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Solution

The fourth proportional to 6,986.16, 10,478.52 and 4,381.20 is: 6,571.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.16 : 10,478.52 = 4,381.20 : x
  2. Step 2: Convert to fraction form
    6,986.16/10,478.52 = 4,381.20/x
  3. Step 3: Cross multiply
    6,986.16x = 10,478.52 × 4,381.20
  4. Step 4: Simplify right side
    6,986.16x = 45,908,491.82
  5. Step 5: Solve for x
    x = 45,908,491.82/6,986.16
  6. Step 6: Final answer
    x = 6,571.35

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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.