Home / 5,615.10-8,423.70-1,918.38

Finding the Fourth Proportional to 5,615.10, 8,423.70 and 1,918.38

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Solution

The fourth proportional to 5,615.10, 8,423.70 and 1,918.38 is: 2,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.10 : 8,423.70 = 1,918.38 : x
  2. Step 2: Convert to fraction form
    5,615.10/8,423.70 = 1,918.38/x
  3. Step 3: Cross multiply
    5,615.10x = 8,423.70 × 1,918.38
  4. Step 4: Simplify right side
    5,615.10x = 16,159,857.61
  5. Step 5: Solve for x
    x = 16,159,857.61/5,615.10
  6. Step 6: Final answer
    x = 2,877.93

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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.