Home / 5,685.69-8,528.84-1,790.40

Finding the Fourth Proportional to 5,685.69, 8,528.84 and 1,790.40

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Solution

The fourth proportional to 5,685.69, 8,528.84 and 1,790.40 is: 2,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.69 : 8,528.84 = 1,790.40 : x
  2. Step 2: Convert to fraction form
    5,685.69/8,528.84 = 1,790.40/x
  3. Step 3: Cross multiply
    5,685.69x = 8,528.84 × 1,790.40
  4. Step 4: Simplify right side
    5,685.69x = 15,270,004.86
  5. Step 5: Solve for x
    x = 15,270,004.86/5,685.69
  6. Step 6: Final answer
    x = 2,685.69

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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.