Home / 7,048.85-9,720.69-4,215.76

Finding the Fourth Proportional to 7,048.85, 9,720.69 and 4,215.76

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Solution

The fourth proportional to 7,048.85, 9,720.69 and 4,215.76 is: 5,813.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.85 : 9,720.69 = 4,215.76 : x
  2. Step 2: Convert to fraction form
    7,048.85/9,720.69 = 4,215.76/x
  3. Step 3: Cross multiply
    7,048.85x = 9,720.69 × 4,215.76
  4. Step 4: Simplify right side
    7,048.85x = 40,980,096.07
  5. Step 5: Solve for x
    x = 40,980,096.07/7,048.85
  6. Step 6: Final answer
    x = 5,813.73

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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.