Home / 2,880.05-4,312.40-1,645.79

Finding the Fourth Proportional to 2,880.05, 4,312.40 and 1,645.79

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Solution

The fourth proportional to 2,880.05, 4,312.40 and 1,645.79 is: 2,464.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.05 : 4,312.40 = 1,645.79 : x
  2. Step 2: Convert to fraction form
    2,880.05/4,312.40 = 1,645.79/x
  3. Step 3: Cross multiply
    2,880.05x = 4,312.40 × 1,645.79
  4. Step 4: Simplify right side
    2,880.05x = 7,097,275.01
  5. Step 5: Solve for x
    x = 7,097,275.01/2,880.05
  6. Step 6: Final answer
    x = 2,464.29

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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.