Home / 7,897.10-11,830.05-5,125.70

Finding the Fourth Proportional to 7,897.10, 11,830.05 and 5,125.70

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Solution

The fourth proportional to 7,897.10, 11,830.05 and 5,125.70 is: 7,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.10 : 11,830.05 = 5,125.70 : x
  2. Step 2: Convert to fraction form
    7,897.10/11,830.05 = 5,125.70/x
  3. Step 3: Cross multiply
    7,897.10x = 11,830.05 × 5,125.70
  4. Step 4: Simplify right side
    7,897.10x = 60,637,287.29
  5. Step 5: Solve for x
    x = 60,637,287.29/7,897.10
  6. Step 6: Final answer
    x = 7,678.42

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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.