Home / 10,897.20-16,345.80-3,970.08

Finding the Fourth Proportional to 10,897.20, 16,345.80 and 3,970.08

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Solution

The fourth proportional to 10,897.20, 16,345.80 and 3,970.08 is: 5,955.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,897.20 : 16,345.80 = 3,970.08 : x
  2. Step 2: Convert to fraction form
    10,897.20/16,345.80 = 3,970.08/x
  3. Step 3: Cross multiply
    10,897.20x = 16,345.80 × 3,970.08
  4. Step 4: Simplify right side
    10,897.20x = 64,894,133.66
  5. Step 5: Solve for x
    x = 64,894,133.66/10,897.20
  6. Step 6: Final answer
    x = 5,955.12

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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.