Home / 7,128.53-10,699.67-5,274.01

Finding the Fourth Proportional to 7,128.53, 10,699.67 and 5,274.01

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Solution

The fourth proportional to 7,128.53, 10,699.67 and 5,274.01 is: 7,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.53 : 10,699.67 = 5,274.01 : x
  2. Step 2: Convert to fraction form
    7,128.53/10,699.67 = 5,274.01/x
  3. Step 3: Cross multiply
    7,128.53x = 10,699.67 × 5,274.01
  4. Step 4: Simplify right side
    7,128.53x = 56,430,178.30
  5. Step 5: Solve for x
    x = 56,430,178.30/7,128.53
  6. Step 6: Final answer
    x = 7,916.10

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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.