Home / 5,615.17-8,421.32-1,665.51

Finding the Fourth Proportional to 5,615.17, 8,421.32 and 1,665.51

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Solution

The fourth proportional to 5,615.17, 8,421.32 and 1,665.51 is: 2,497.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.17 : 8,421.32 = 1,665.51 : x
  2. Step 2: Convert to fraction form
    5,615.17/8,421.32 = 1,665.51/x
  3. Step 3: Cross multiply
    5,615.17x = 8,421.32 × 1,665.51
  4. Step 4: Simplify right side
    5,615.17x = 14,025,792.67
  5. Step 5: Solve for x
    x = 14,025,792.67/5,615.17
  6. Step 6: Final answer
    x = 2,497.84

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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.