Home / 7,845.02-10,829.40-5,607.80

Finding the Fourth Proportional to 7,845.02, 10,829.40 and 5,607.80

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Solution

The fourth proportional to 7,845.02, 10,829.40 and 5,607.80 is: 7,741.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845.02 : 10,829.40 = 5,607.80 : x
  2. Step 2: Convert to fraction form
    7,845.02/10,829.40 = 5,607.80/x
  3. Step 3: Cross multiply
    7,845.02x = 10,829.40 × 5,607.80
  4. Step 4: Simplify right side
    7,845.02x = 60,729,109.32
  5. Step 5: Solve for x
    x = 60,729,109.32/7,845.02
  6. Step 6: Final answer
    x = 7,741.10

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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.