Home / 1,767.30-2,438.95-981.35

Finding the Fourth Proportional to 1,767.30, 2,438.95 and 981.35

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Solution

The fourth proportional to 1,767.30, 2,438.95 and 981.35 is: 1,354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.30 : 2,438.95 = 981.35 : x
  2. Step 2: Convert to fraction form
    1,767.30/2,438.95 = 981.35/x
  3. Step 3: Cross multiply
    1,767.30x = 2,438.95 × 981.35
  4. Step 4: Simplify right side
    1,767.30x = 2,393,446.48
  5. Step 5: Solve for x
    x = 2,393,446.48/1,767.30
  6. Step 6: Final answer
    x = 1,354.30

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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.