Home / 9,869.79-13,618.08-5,890.13

Finding the Fourth Proportional to 9,869.79, 13,618.08 and 5,890.13

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Solution

The fourth proportional to 9,869.79, 13,618.08 and 5,890.13 is: 8,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,869.79 : 13,618.08 = 5,890.13 : x
  2. Step 2: Convert to fraction form
    9,869.79/13,618.08 = 5,890.13/x
  3. Step 3: Cross multiply
    9,869.79x = 13,618.08 × 5,890.13
  4. Step 4: Simplify right side
    9,869.79x = 80,212,193.46
  5. Step 5: Solve for x
    x = 80,212,193.46/9,869.79
  6. Step 6: Final answer
    x = 8,127.04

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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.