Home / 8,421.01-11,618.95-5,436.20

Finding the Fourth Proportional to 8,421.01, 11,618.95 and 5,436.20

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Solution

The fourth proportional to 8,421.01, 11,618.95 and 5,436.20 is: 7,500.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.01 : 11,618.95 = 5,436.20 : x
  2. Step 2: Convert to fraction form
    8,421.01/11,618.95 = 5,436.20/x
  3. Step 3: Cross multiply
    8,421.01x = 11,618.95 × 5,436.20
  4. Step 4: Simplify right side
    8,421.01x = 63,162,935.99
  5. Step 5: Solve for x
    x = 63,162,935.99/8,421.01
  6. Step 6: Final answer
    x = 7,500.64

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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.