Home / 5,123.85-7,019.69-4,931.87

Finding the Fourth Proportional to 5,123.85, 7,019.69 and 4,931.87

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Solution

The fourth proportional to 5,123.85, 7,019.69 and 4,931.87 is: 6,756.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.85 : 7,019.69 = 4,931.87 : x
  2. Step 2: Convert to fraction form
    5,123.85/7,019.69 = 4,931.87/x
  3. Step 3: Cross multiply
    5,123.85x = 7,019.69 × 4,931.87
  4. Step 4: Simplify right side
    5,123.85x = 34,620,205.99
  5. Step 5: Solve for x
    x = 34,620,205.99/5,123.85
  6. Step 6: Final answer
    x = 6,756.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.