Home / 5,649.10-7,804.60-3,890.08

Finding the Fourth Proportional to 5,649.10, 7,804.60 and 3,890.08

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Solution

The fourth proportional to 5,649.10, 7,804.60 and 3,890.08 is: 5,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,649.10 : 7,804.60 = 3,890.08 : x
  2. Step 2: Convert to fraction form
    5,649.10/7,804.60 = 3,890.08/x
  3. Step 3: Cross multiply
    5,649.10x = 7,804.60 × 3,890.08
  4. Step 4: Simplify right side
    5,649.10x = 30,360,518.37
  5. Step 5: Solve for x
    x = 30,360,518.37/5,649.10
  6. Step 6: Final answer
    x = 5,374.40

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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.