Home / 1,569.96-2,167.29-981.36

Finding the Fourth Proportional to 1,569.96, 2,167.29 and 981.36

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Solution

The fourth proportional to 1,569.96, 2,167.29 and 981.36 is: 1,354.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.96 : 2,167.29 = 981.36 : x
  2. Step 2: Convert to fraction form
    1,569.96/2,167.29 = 981.36/x
  3. Step 3: Cross multiply
    1,569.96x = 2,167.29 × 981.36
  4. Step 4: Simplify right side
    1,569.96x = 2,126,891.71
  5. Step 5: Solve for x
    x = 2,126,891.71/1,569.96
  6. Step 6: Final answer
    x = 1,354.74

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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.