Home / 2,478.07-3,420.01-1,582.64

Finding the Fourth Proportional to 2,478.07, 3,420.01 and 1,582.64

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Solution

The fourth proportional to 2,478.07, 3,420.01 and 1,582.64 is: 2,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.07 : 3,420.01 = 1,582.64 : x
  2. Step 2: Convert to fraction form
    2,478.07/3,420.01 = 1,582.64/x
  3. Step 3: Cross multiply
    2,478.07x = 3,420.01 × 1,582.64
  4. Step 4: Simplify right side
    2,478.07x = 5,412,642.09
  5. Step 5: Solve for x
    x = 5,412,642.09/2,478.07
  6. Step 6: Final answer
    x = 2,184.21

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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.