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Finding the Fourth Proportional to 1,716.55, 2,368.85 and 970.58

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Solution

The fourth proportional to 1,716.55, 2,368.85 and 970.58 is: 1,339.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,716.55 : 2,368.85 = 970.58 : x
  2. Step 2: Convert to fraction form
    1,716.55/2,368.85 = 970.58/x
  3. Step 3: Cross multiply
    1,716.55x = 2,368.85 × 970.58
  4. Step 4: Simplify right side
    1,716.55x = 2,299,141.74
  5. Step 5: Solve for x
    x = 2,299,141.74/1,716.55
  6. Step 6: Final answer
    x = 1,339.40

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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.