Home / 6,428.20-8,870.64-3,595.84

Finding the Fourth Proportional to 6,428.20, 8,870.64 and 3,595.84

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Solution

The fourth proportional to 6,428.20, 8,870.64 and 3,595.84 is: 4,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.20 : 8,870.64 = 3,595.84 : x
  2. Step 2: Convert to fraction form
    6,428.20/8,870.64 = 3,595.84/x
  3. Step 3: Cross multiply
    6,428.20x = 8,870.64 × 3,595.84
  4. Step 4: Simplify right side
    6,428.20x = 31,897,402.14
  5. Step 5: Solve for x
    x = 31,897,402.14/6,428.20
  6. Step 6: Final answer
    x = 4,962.10

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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.