Home / 5,715.21-7,888.65-3,325.74

Finding the Fourth Proportional to 5,715.21, 7,888.65 and 3,325.74

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Solution

The fourth proportional to 5,715.21, 7,888.65 and 3,325.74 is: 4,590.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.21 : 7,888.65 = 3,325.74 : x
  2. Step 2: Convert to fraction form
    5,715.21/7,888.65 = 3,325.74/x
  3. Step 3: Cross multiply
    5,715.21x = 7,888.65 × 3,325.74
  4. Step 4: Simplify right side
    5,715.21x = 26,235,598.85
  5. Step 5: Solve for x
    x = 26,235,598.85/5,715.21
  6. Step 6: Final answer
    x = 4,590.49

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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.