Home / 9,840.40-13,579.34-5,364.04

Finding the Fourth Proportional to 9,840.40, 13,579.34 and 5,364.04

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Solution

The fourth proportional to 9,840.40, 13,579.34 and 5,364.04 is: 7,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,840.40 : 13,579.34 = 5,364.04 : x
  2. Step 2: Convert to fraction form
    9,840.40/13,579.34 = 5,364.04/x
  3. Step 3: Cross multiply
    9,840.40x = 13,579.34 × 5,364.04
  4. Step 4: Simplify right side
    9,840.40x = 72,840,122.93
  5. Step 5: Solve for x
    x = 72,840,122.93/9,840.40
  6. Step 6: Final answer
    x = 7,402.15

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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.