Home / 7,811.30-10,784.63-6,970.56

Finding the Fourth Proportional to 7,811.30, 10,784.63 and 6,970.56

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Solution

The fourth proportional to 7,811.30, 10,784.63 and 6,970.56 is: 9,623.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.30 : 10,784.63 = 6,970.56 : x
  2. Step 2: Convert to fraction form
    7,811.30/10,784.63 = 6,970.56/x
  3. Step 3: Cross multiply
    7,811.30x = 10,784.63 × 6,970.56
  4. Step 4: Simplify right side
    7,811.30x = 75,174,888.71
  5. Step 5: Solve for x
    x = 75,174,888.71/7,811.30
  6. Step 6: Final answer
    x = 9,623.86

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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.