Home / 5,875.31-8,812.71-1,979.70

Finding the Fourth Proportional to 5,875.31, 8,812.71 and 1,979.70

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Solution

The fourth proportional to 5,875.31, 8,812.71 and 1,979.70 is: 2,969.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,875.31 : 8,812.71 = 1,979.70 : x
  2. Step 2: Convert to fraction form
    5,875.31/8,812.71 = 1,979.70/x
  3. Step 3: Cross multiply
    5,875.31x = 8,812.71 × 1,979.70
  4. Step 4: Simplify right side
    5,875.31x = 17,446,521.99
  5. Step 5: Solve for x
    x = 17,446,521.99/5,875.31
  6. Step 6: Final answer
    x = 2,969.46

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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.