Home / 2,420.69-3,646.78-2,390.45

Finding the Fourth Proportional to 2,420.69, 3,646.78 and 2,390.45

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Solution

The fourth proportional to 2,420.69, 3,646.78 and 2,390.45 is: 3,601.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.69 : 3,646.78 = 2,390.45 : x
  2. Step 2: Convert to fraction form
    2,420.69/3,646.78 = 2,390.45/x
  3. Step 3: Cross multiply
    2,420.69x = 3,646.78 × 2,390.45
  4. Step 4: Simplify right side
    2,420.69x = 8,717,421.04
  5. Step 5: Solve for x
    x = 8,717,421.04/2,420.69
  6. Step 6: Final answer
    x = 3,601.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.