Home / 7,929.90-10,947.74-5,415.66

Finding the Fourth Proportional to 7,929.90, 10,947.74 and 5,415.66

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Solution

The fourth proportional to 7,929.90, 10,947.74 and 5,415.66 is: 7,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.90 : 10,947.74 = 5,415.66 : x
  2. Step 2: Convert to fraction form
    7,929.90/10,947.74 = 5,415.66/x
  3. Step 3: Cross multiply
    7,929.90x = 10,947.74 × 5,415.66
  4. Step 4: Simplify right side
    7,929.90x = 59,289,210.53
  5. Step 5: Solve for x
    x = 59,289,210.53/7,929.90
  6. Step 6: Final answer
    x = 7,476.67

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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.