Home / 1,685.79-2,325.98-1,267.13

Finding the Fourth Proportional to 1,685.79, 2,325.98 and 1,267.13

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Solution

The fourth proportional to 1,685.79, 2,325.98 and 1,267.13 is: 1,748.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.79 : 2,325.98 = 1,267.13 : x
  2. Step 2: Convert to fraction form
    1,685.79/2,325.98 = 1,267.13/x
  3. Step 3: Cross multiply
    1,685.79x = 2,325.98 × 1,267.13
  4. Step 4: Simplify right side
    1,685.79x = 2,947,328.02
  5. Step 5: Solve for x
    x = 2,947,328.02/1,685.79
  6. Step 6: Final answer
    x = 1,748.34

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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.