Home / 2,880.60-4,316.80-1,645.40

Finding the Fourth Proportional to 2,880.60, 4,316.80 and 1,645.40

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Solution

The fourth proportional to 2,880.60, 4,316.80 and 1,645.40 is: 2,465.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.60 : 4,316.80 = 1,645.40 : x
  2. Step 2: Convert to fraction form
    2,880.60/4,316.80 = 1,645.40/x
  3. Step 3: Cross multiply
    2,880.60x = 4,316.80 × 1,645.40
  4. Step 4: Simplify right side
    2,880.60x = 7,102,862.72
  5. Step 5: Solve for x
    x = 7,102,862.72/2,880.60
  6. Step 6: Final answer
    x = 2,465.76

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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.