Home / 1,930.10-2,895.15-631.70

Finding the Fourth Proportional to 1,930.10, 2,895.15 and 631.70

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Solution

The fourth proportional to 1,930.10, 2,895.15 and 631.70 is: 947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.10 : 2,895.15 = 631.70 : x
  2. Step 2: Convert to fraction form
    1,930.10/2,895.15 = 631.70/x
  3. Step 3: Cross multiply
    1,930.10x = 2,895.15 × 631.70
  4. Step 4: Simplify right side
    1,930.10x = 1,828,866.26
  5. Step 5: Solve for x
    x = 1,828,866.26/1,930.10
  6. Step 6: Final answer
    x = 947.55

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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.