Home / 2,421.58-3,630.60-777.19

Finding the Fourth Proportional to 2,421.58, 3,630.60 and 777.19

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Solution

The fourth proportional to 2,421.58, 3,630.60 and 777.19 is: 1,165.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.58 : 3,630.60 = 777.19 : x
  2. Step 2: Convert to fraction form
    2,421.58/3,630.60 = 777.19/x
  3. Step 3: Cross multiply
    2,421.58x = 3,630.60 × 777.19
  4. Step 4: Simplify right side
    2,421.58x = 2,821,666.01
  5. Step 5: Solve for x
    x = 2,821,666.01/2,421.58
  6. Step 6: Final answer
    x = 1,165.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.