Home / 5,386.24-8,079.36-1,688.75

Finding the Fourth Proportional to 5,386.24, 8,079.36 and 1,688.75

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Solution

The fourth proportional to 5,386.24, 8,079.36 and 1,688.75 is: 2,533.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.24 : 8,079.36 = 1,688.75 : x
  2. Step 2: Convert to fraction form
    5,386.24/8,079.36 = 1,688.75/x
  3. Step 3: Cross multiply
    5,386.24x = 8,079.36 × 1,688.75
  4. Step 4: Simplify right side
    5,386.24x = 13,644,002.77
  5. Step 5: Solve for x
    x = 13,644,002.77/5,386.24
  6. Step 6: Final answer
    x = 2,533.12

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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.