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Finding the Fourth Proportional to 1,715.88, 2,573.82 and 561.63

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Solution

The fourth proportional to 1,715.88, 2,573.82 and 561.63 is: 842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.88 : 2,573.82 = 561.63 : x
  2. Step 2: Convert to fraction form
    1,715.88/2,573.82 = 561.63/x
  3. Step 3: Cross multiply
    1,715.88x = 2,573.82 × 561.63
  4. Step 4: Simplify right side
    1,715.88x = 1,445,534.53
  5. Step 5: Solve for x
    x = 1,445,534.53/1,715.88
  6. Step 6: Final answer
    x = 842.45

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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.