Home / 6,897.16-9,518.70-3,913.12

Finding the Fourth Proportional to 6,897.16, 9,518.70 and 3,913.12

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Solution

The fourth proportional to 6,897.16, 9,518.70 and 3,913.12 is: 5,400.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.16 : 9,518.70 = 3,913.12 : x
  2. Step 2: Convert to fraction form
    6,897.16/9,518.70 = 3,913.12/x
  3. Step 3: Cross multiply
    6,897.16x = 9,518.70 × 3,913.12
  4. Step 4: Simplify right side
    6,897.16x = 37,247,815.34
  5. Step 5: Solve for x
    x = 37,247,815.34/6,897.16
  6. Step 6: Final answer
    x = 5,400.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.