Home / 6,402.40-9,603.60-5,106.40

Finding the Fourth Proportional to 6,402.40, 9,603.60 and 5,106.40

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Solution

The fourth proportional to 6,402.40, 9,603.60 and 5,106.40 is: 7,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,402.40 : 9,603.60 = 5,106.40 : x
  2. Step 2: Convert to fraction form
    6,402.40/9,603.60 = 5,106.40/x
  3. Step 3: Cross multiply
    6,402.40x = 9,603.60 × 5,106.40
  4. Step 4: Simplify right side
    6,402.40x = 49,039,823.04
  5. Step 5: Solve for x
    x = 49,039,823.04/6,402.40
  6. Step 6: Final answer
    x = 7,659.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.