Home / 7,890.72-10,898.76-6,947.28

Finding the Fourth Proportional to 7,890.72, 10,898.76 and 6,947.28

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Solution

The fourth proportional to 7,890.72, 10,898.76 and 6,947.28 is: 9,595.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.72 : 10,898.76 = 6,947.28 : x
  2. Step 2: Convert to fraction form
    7,890.72/10,898.76 = 6,947.28/x
  3. Step 3: Cross multiply
    7,890.72x = 10,898.76 × 6,947.28
  4. Step 4: Simplify right side
    7,890.72x = 75,716,737.37
  5. Step 5: Solve for x
    x = 75,716,737.37/7,890.72
  6. Step 6: Final answer
    x = 9,595.67

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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.