Home / 2,880.37-4,312.24-1,690.81

Finding the Fourth Proportional to 2,880.37, 4,312.24 and 1,690.81

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Solution

The fourth proportional to 2,880.37, 4,312.24 and 1,690.81 is: 2,531.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.37 : 4,312.24 = 1,690.81 : x
  2. Step 2: Convert to fraction form
    2,880.37/4,312.24 = 1,690.81/x
  3. Step 3: Cross multiply
    2,880.37x = 4,312.24 × 1,690.81
  4. Step 4: Simplify right side
    2,880.37x = 7,291,178.51
  5. Step 5: Solve for x
    x = 7,291,178.51/2,880.37
  6. Step 6: Final answer
    x = 2,531.33

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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.