Home / 9,897.08-13,657.74-5,420.84

Finding the Fourth Proportional to 9,897.08, 13,657.74 and 5,420.84

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Solution

The fourth proportional to 9,897.08, 13,657.74 and 5,420.84 is: 7,480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,897.08 : 13,657.74 = 5,420.84 : x
  2. Step 2: Convert to fraction form
    9,897.08/13,657.74 = 5,420.84/x
  3. Step 3: Cross multiply
    9,897.08x = 13,657.74 × 5,420.84
  4. Step 4: Simplify right side
    9,897.08x = 74,036,423.30
  5. Step 5: Solve for x
    x = 74,036,423.30/9,897.08
  6. Step 6: Final answer
    x = 7,480.63

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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.