Home / 9,785.60-14,678.40-5,411.60

Finding the Fourth Proportional to 9,785.60, 14,678.40 and 5,411.60

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Solution

The fourth proportional to 9,785.60, 14,678.40 and 5,411.60 is: 8,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,785.60 : 14,678.40 = 5,411.60 : x
  2. Step 2: Convert to fraction form
    9,785.60/14,678.40 = 5,411.60/x
  3. Step 3: Cross multiply
    9,785.60x = 14,678.40 × 5,411.60
  4. Step 4: Simplify right side
    9,785.60x = 79,433,629.44
  5. Step 5: Solve for x
    x = 79,433,629.44/9,785.60
  6. Step 6: Final answer
    x = 8,117.40

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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.