Home / 1,570.24-2,355.90-692.47

Finding the Fourth Proportional to 1,570.24, 2,355.90 and 692.47

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Solution

The fourth proportional to 1,570.24, 2,355.90 and 692.47 is: 1,038.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.24 : 2,355.90 = 692.47 : x
  2. Step 2: Convert to fraction form
    1,570.24/2,355.90 = 692.47/x
  3. Step 3: Cross multiply
    1,570.24x = 2,355.90 × 692.47
  4. Step 4: Simplify right side
    1,570.24x = 1,631,390.07
  5. Step 5: Solve for x
    x = 1,631,390.07/1,570.24
  6. Step 6: Final answer
    x = 1,038.94

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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.