Home / 7,647.35-10,556.35-5,420.87

Finding the Fourth Proportional to 7,647.35, 10,556.35 and 5,420.87

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Solution

The fourth proportional to 7,647.35, 10,556.35 and 5,420.87 is: 7,482.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647.35 : 10,556.35 = 5,420.87 : x
  2. Step 2: Convert to fraction form
    7,647.35/10,556.35 = 5,420.87/x
  3. Step 3: Cross multiply
    7,647.35x = 10,556.35 × 5,420.87
  4. Step 4: Simplify right side
    7,647.35x = 57,224,534.69
  5. Step 5: Solve for x
    x = 57,224,534.69/7,647.35
  6. Step 6: Final answer
    x = 7,482.92

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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.