Home / 5,678.08-8,516.40-1,782.40

Finding the Fourth Proportional to 5,678.08, 8,516.40 and 1,782.40

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Solution

The fourth proportional to 5,678.08, 8,516.40 and 1,782.40 is: 2,673.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.08 : 8,516.40 = 1,782.40 : x
  2. Step 2: Convert to fraction form
    5,678.08/8,516.40 = 1,782.40/x
  3. Step 3: Cross multiply
    5,678.08x = 8,516.40 × 1,782.40
  4. Step 4: Simplify right side
    5,678.08x = 15,179,631.36
  5. Step 5: Solve for x
    x = 15,179,631.36/5,678.08
  6. Step 6: Final answer
    x = 2,673.37

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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.