Home / 2,070.63-2,857.05-1,186.20

Finding the Fourth Proportional to 2,070.63, 2,857.05 and 1,186.20

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Solution

The fourth proportional to 2,070.63, 2,857.05 and 1,186.20 is: 1,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.63 : 2,857.05 = 1,186.20 : x
  2. Step 2: Convert to fraction form
    2,070.63/2,857.05 = 1,186.20/x
  3. Step 3: Cross multiply
    2,070.63x = 2,857.05 × 1,186.20
  4. Step 4: Simplify right side
    2,070.63x = 3,389,032.71
  5. Step 5: Solve for x
    x = 3,389,032.71/2,070.63
  6. Step 6: Final answer
    x = 1,636.72

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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.