Home / 7,977.48-10,999.50-5,460.80

Finding the Fourth Proportional to 7,977.48, 10,999.50 and 5,460.80

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Solution

The fourth proportional to 7,977.48, 10,999.50 and 5,460.80 is: 7,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.48 : 10,999.50 = 5,460.80 : x
  2. Step 2: Convert to fraction form
    7,977.48/10,999.50 = 5,460.80/x
  3. Step 3: Cross multiply
    7,977.48x = 10,999.50 × 5,460.80
  4. Step 4: Simplify right side
    7,977.48x = 60,066,069.60
  5. Step 5: Solve for x
    x = 60,066,069.60/7,977.48
  6. Step 6: Final answer
    x = 7,529.45

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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.