Home / 2,790.10-4,186.98-1,058.74

Finding the Fourth Proportional to 2,790.10, 4,186.98 and 1,058.74

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Solution

The fourth proportional to 2,790.10, 4,186.98 and 1,058.74 is: 1,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.10 : 4,186.98 = 1,058.74 : x
  2. Step 2: Convert to fraction form
    2,790.10/4,186.98 = 1,058.74/x
  3. Step 3: Cross multiply
    2,790.10x = 4,186.98 × 1,058.74
  4. Step 4: Simplify right side
    2,790.10x = 4,432,923.21
  5. Step 5: Solve for x
    x = 4,432,923.21/2,790.10
  6. Step 6: Final answer
    x = 1,588.80

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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.