Home / 3,421.40-4,719.11-3,307.10

Finding the Fourth Proportional to 3,421.40, 4,719.11 and 3,307.10

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Solution

The fourth proportional to 3,421.40, 4,719.11 and 3,307.10 is: 4,561.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.40 : 4,719.11 = 3,307.10 : x
  2. Step 2: Convert to fraction form
    3,421.40/4,719.11 = 3,307.10/x
  3. Step 3: Cross multiply
    3,421.40x = 4,719.11 × 3,307.10
  4. Step 4: Simplify right side
    3,421.40x = 15,606,528.55
  5. Step 5: Solve for x
    x = 15,606,528.55/3,421.40
  6. Step 6: Final answer
    x = 4,561.45

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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.