Home / 5,615.28-8,421.47-1,665.61

Finding the Fourth Proportional to 5,615.28, 8,421.47 and 1,665.61

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Solution

The fourth proportional to 5,615.28, 8,421.47 and 1,665.61 is: 2,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.28 : 8,421.47 = 1,665.61 : x
  2. Step 2: Convert to fraction form
    5,615.28/8,421.47 = 1,665.61/x
  3. Step 3: Cross multiply
    5,615.28x = 8,421.47 × 1,665.61
  4. Step 4: Simplify right side
    5,615.28x = 14,026,884.65
  5. Step 5: Solve for x
    x = 14,026,884.65/5,615.28
  6. Step 6: Final answer
    x = 2,497.98

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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.